Question

If sin(3x+2)=cos(4x-10), what is the value of x to the nearest tenth?

A. 7.6
B. 12.0
C. 14.0
D. 26.9

Answer 1

sin(3x + 2) = cos(4x - 10)
sin(3(14) + 2) = cos(4(14) - 10)
sin(42 + 2) = cos(57 - 10)
sin(44) = cos(47)
0.7 ≈ 0.7
It is equal to C.