Cosine Study guides, Class notes & Summaries
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TSA Written Exam Study Guide 100 Practice Test with answers| Updated 2024
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The technique of holding a particular picture on the screen for an extended period of time is known as a/an - ️️freeze frame 
 
A device that converts electricity into sound is a/an - ️️speaker 
 
When the length of the side adjacent to an angle is divided by the hypotenuse of a right triangle, the result is the _ of the angle. - ️️cosine 
 
The number system that uses only 1's and 0's to represent values is - ️️binary 
 
The part of an internal combination engine in which the ...
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ALEKS WITH COMPLETE SOLUTIONS 100% 2023/2024
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ALEKS WITH COMPLETE SOLUTIONS 100% 2023/2024 
Quadratic Formula 
-b±[√b²-4ac]/2a 
 
 
Slope 
(y₂-y₁)/(x₂-x₁) 
 
 
Slope-Intercept 
y=mx+b 
 
 
a³-b³ 
(a-b)(a²+ab+b²) 
 
 
a³+b³ 
(a+b)(a²-ab+b²) 
 
 
a²-b² 
(a-b)(a+b) 
 
 
a²-2ab+b² 
(a-b)² 
 
 
a²+2ab+b² 
(a+b)² 
 
 
(a+b)(c+d) 
ac+ad+bc+bd 
 
 
a(b+c) 
ab+ac 
 
 
sine ratio 
opposite ÷ hypotenuse 
 
 
cosine ratio 
adjacent ÷ hypotenuse 
 
 
tangent ratio 
opposite ÷ adjacent 
 
 
Direct Variation 
y=kx
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ESP X-Zone: Valves Questions & Answers 100% Accurate!
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ESP X-Zone: Valves Questions & Answers 100% Accurate! 
 
In echo when is a raphe typically seen? 
a) bicuspid aortic valve 
b) rheumatic aortic stenosis 
c) cleft aortic valve 
d) degenerative aortic stenosis - ANSWER-A) Bicuspid aortic valve 
 
An underestimation of the severity of aortic stenosis by continuous wave doppler may occur with: 
a) high cardiac output 
b) angle cosine theta of 40 degrees 
c) high doppler gain settings 
d) severe aortic regurgitation - ANSWER-B) Angle cosine ...
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ESP Comprehensive Exam Questions & Answers (Scored A+)
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ESP Comprehensive Exam Questions & Answers (Scored A+What is the most typical Doppler shift measured clinically? 
A. 3.5 MHz 
B. 3,500,000 Hz 
C. 2 kHz 
D. 1,000 kHz 
E. 20,000 Hz - ANSWER-C. 2 kHz 
 
True or False: Doppler shifts always occur if the source and receiver are in motion relative to each other. - ANSWER-False 
 
True or False Doppler shifts always occur if the source and receiver are in motion relative to eachother. - ANSWER-False 
 
True or False: Doppler shifts always occur if the...
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Level 2 NETA Study Guide Question and answers correctly solved 2024
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Level 2 NETA Study Guide Question and answers correctly solved 2024 Portable ladders should extend... - correct answer At least 3 feet above the landing. 
 
Electrical fires belong in what class? - correct answer Class C 
 
What is a confined space? - correct answer Any space having limited openings for entry and exit, unfavorable ventilation, or not designed for continuous worker occupancy. 
 
Entry permits must be signed by who? - correct answer Trained individual serving as entry ...
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Precalculus unit 7 Test Questions and Answers All Correct
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Precalculus unit 7 Test Questions and Answers All Correct 
 
What is the range of the sine graph? - Answer-[-1,1] 
 
amplitude - Answer-positive height of the trig function (vertical stretch) 
 
How do you graph the sine curve? - Answer-At the origin, start middle, moving to the right, high, middle, low 
 
What is the reciprocal of the sine function? - Answer-cosecant 
 
Where are the asymptotes when graphing cosecant? - Answer-x=0, x=+/- (180, 360) 
 
How do you graph the cosine curve? - Answe...
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Physics Doppler Effect Exam Questions and Answers 100% Solved
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Physics Doppler Effect Exam Questions 
and Answers 100% Solved 
What is the doppler effect? - answera change in frequency caused by the motion of a sound 
source 
In a positive doppler shift the received frequency is [lower, higher] than the transmitted 
frequency - answerhigher 
In a negative doppler shift the received frequency is [lower, higher] than the transmitted 
frequency - answerlower 
the amount of increase or decrease in doppler frequency depends on what 3 things? - 
answer1. speed 
2...
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Questions Millwright Book 3 (complete) with correct Answers
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Questions Millwright Book 3 (complete) with correct Answers 
The fraction equivalent of 6.125 is _________. - ANSWER ️️ 6 1/8 (p. 1.3/Table 1) 
The decimal equivalent of 9/16 inch is ________. - ANSWER ️️ .05625 (p. 1.3/Table 
1) 
One atmosphere equals ________ pounds per square inch. - ANSWER ️️ 14.696 (p. 
1.5/Table 3) 
If the opposite side in Figure 1 is 4 feet, and the hypotenuse is 35 ft, the adjacent side is 
_________. (Round off to the nearest tenth.) - ANSWER ️️ 34.9 ft ...
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Edexcel A Level Maths – Pure 2023 With Verified and Elaborated Questions
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Edexcel A Level Maths – Pure 2023 With Verified and Elaborated Questions 
 
Cosine Rule - Know 2 sides, and the angle in between. You want the missing side. Correct Answer a² = b² + c² - 2bcCosA 
 
Cosine Rule - Know 3 sides. You want an angle. Correct Answer Cos A = (b² + c² - a²) ÷ 2bc 
 
Sine Rule - Know 2 angles and a side. You want the missing side. Correct Answer (a ÷ SinA) = (b ÷ SinB) = (c ÷ SinC) 
 
Sine Rule - Know 2 sides and an angle. You want a missing angle. Correct An...
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ALEKS WITH COMPLETE SOLUTIONS 100% 2023/2024
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ALEKS WITH COMPLETE SOLUTIONS 100% 2023/2024 
Quadratic Formula 
-b±[√b²-4ac]/2a 
 
 
Slope 
(y₂-y₁)/(x₂-x₁) 
 
 
Slope-Intercept 
y=mx+b 
 
 
a³-b³ 
(a-b)(a²+ab+b²) 
 
 
a³+b³ 
(a+b)(a²-ab+b²) 
 
 
a²-b² 
(a-b)(a+b) 
 
 
a²-2ab+b² 
(a-b)² 
 
 
a²+2ab+b² 
(a+b)² 
 
 
(a+b)(c+d) 
ac+ad+bc+bd 
 
 
a(b+c) 
ab+ac 
 
 
sine ratio 
opposite ÷ hypotenuse 
 
 
cosine ratio 
adjacent ÷ hypotenuse 
 
 
tangent ratio 
opposite ÷ adjacent 
 
 
Direct Variation 
y=kx
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