Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos(2?) = 
, 0 < ? < 
Find cos ?.
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Find the following. Assume that letters can represent any real number.
A. 
- 4
B. x - 4
C. 
D. 4 - x
Mathematics
Find the exact value of the following expression without using a calculator.tan 300°
A. 
B. - 
C. - 
D. 
Mathematics
Solve the equation.13x2 - 34 = 5
A. 3 or ?3
B. 
or ?
C. 3
D. 
Mathematics
Solve the problem.Bob fenced in a rectangular garden in his yard. The length of the rectangle is 6 feet longer than the width and the perimeter is 84 feet. What is the width of the rectangle?
A. 36 ft B. 20 ft C. 17 ft D. 18 ft
Mathematics