Complete the identity.sin(3?) sin(5?) cos(3?) cos(5?) = ?

A.
B.
C.
D. cos2(30?)

Answer: C

Mathematics

You might also like to view...

Evaluate the integral.

A.
B.
C. Diverges
D. 1

View
Mathematics

Factor the trinomial, or state that the trinomial is prime. Check your factorization using FOIL multiplication.6x2 + 19x + 10

A. (x + 2)(6x + 5) B. (3x - 2)(2x - 5) C. (3x + 2)(2x + 5) D. (2x + 2)(3x - 5)

View
Mathematics

Factor.15x2 + 32xy + 16y2

A. (3x - 4y)(5x - 4y) B. (15x + 4y)(x + 4y) C. (3x + 4y)(5x + 4y) D. (15x + y)(x + 16y)

View
Mathematics

Solve.Given logb 7 = 1.081 and logb 14 = 1.466, evaluate logb 2.

A. cannot be found using the properties of logarithms B. 2.547 C. 0.385 D. 1.356

View
Mathematics