Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.sin ? = 
, 0 < ? < 
Find cos(2?).
A. 
B. 
C. 
D. - 
Answer: B
You might also like to view...
Perform the indicated operation. Simplify if possible.
+ 
A. 
B. 
C. 5
D. 0
Divide the real numbers. Write any improper fraction as a whole or mixed number where appropriate.-32 ÷ 
A. 22
B. 25
C. 24
D. 23
The graph of a function f is given. Use the graph to answer the question. 
Find the numbers, if any, at which f has a local minimum. What are the local maxima?
A. f has a local maximum at x = -3.3 and -2.5; the local maximum at -3.3 is -2.5; the local maximum at -2.5 is 5 B. f has a local minimum at x = -3.3 and -2.5; the local minimum at -3.3 is -2.5; the local minimum at -2.5 is 5 C. f has a local minimum at x = -2.5 and 5; the local minimum at -2.5 is -3.3; the local minimum at 5 is -2.5 D. f has a local maximum at x = -2.5 and 5; the local maximum at -2.5 is -3.3; the local maximum at 5 is -2.5
Simplify the expression, leaving your answer with only positive exponents. Assume that all variables represent positive numbers.
A. 
B. 
C. 
D. 