Use Identities to find the exact value.cos 
cos 
+ sin 
sin 
A. 
B. - 1
C. 
D. 
Answer: D
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Solve the problem.Graph y = sin 
and y = csc 
together for -2? ? x ? 2?. Comment on the behavior of csc 
in relation to the signs and values of sin 
.
What will be an ideal response?
Solve the inequality 
. Round your answer to two decimal places.
?
A. ?
B. ?
C. ?
D. ?
Solve the problem.Find the volume of a rectangular pyramid if the area of its base is 15 m2 and its height is 4 m . Round your answer to the nearest unit.
A. 30 m3 B. 60 m3 C. 20 m3 D. 18 m3
Solve the problem.
An investment of $13,335 earns 12% interest compounded monthly for 2 years. (a) What is the future value of the investment? (Use the compound interest table.) (b) If money can be deposited at 6% compounded quarterly, find the present value of the investment.
A. (a) $16,931.85 (b) $15,030.57 B. (a) $14,439.89 (b) $9,462.76 C. (a) $17,931.85 (b) $10,748.77 D. (a) $16,764.27 (b) $9,748.77