Use the given conditions to find the exact value of the expression. cos α = 24/25, sin α < 0, cos (α+11π/6)Please help me find the answer and explain how you got your answer. Any help is much appreciated. Thanks!
Accepted Solution
A:
sin(α) < 0, is just another way to say that sin(α) is a negative value, and that only happens on the III and IV quadrants.
now, we know what the cosine is, so let's use that, notice that, the cosine is a positive value, and if the sine is negative, that only happens on the IV quadrant