Complete the identity.sin ? cos3 ? + sin3 ? cos ? = ?
A. 
sin (2?)
B. 
sin2 (2?)
C. 
sin (2?) cos (2?)
D. 
sin (3?) sin (2?)
Answer: A
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Provide an appropriate response.What is the general form of the compound interest formula for interest paid once a year?
A. A = P × APRY B. A = P × (1 + APR)Y C. A = P × APR D. A = P - APR × Y
Find the inverse function f-1 of the function f.f(x) = 3 sin x - 2
A. f-1(x) = sin-1
B. f-1(x) = cos 
C. f-1(x) = sin-1
D. f-1(x) = 3 sin-1 x - 2
Complete the sentence: On an annual basis the first set of expenses is ____ % of the second set of expenses.Julio goes to a concert once every two weeks at an average ticket price $70; he spends $800 per year on car insurance.
A. 228% B. 105% C. 455% D. 19%
Find the exact value of the expression.sin 255° cos 15° - cos 255° sin 15°
A. - 
B. 
C. - 
D. - 