Find the exact value of the expression if ? = 30°. Do not use a calculator.f(?) = sin ?Find f(?).
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Multiply.(9)(5)
A. 14 B. 40 C. 45 D. 50
Mathematics
Solve the problem.If w = 8i + 4j, find 2w.
A. 16i + 4j B. 10i + 4j C. 16i + 8j D. 10i + 6j
Mathematics
Use a calculator to solve the equation on the interval [0, 2?). Round the answer to two decimal places.cos x = 0.65
A. 0.86, 5.42 B. 0.86, 4.00 C. 0.86, 2.43 D. 0.86, 2.28
Mathematics
Solve the system by graphing.
A. (1, 2) B. (3, 1) C. (2, 1) D. Inconsistent
Mathematics