If 3π/2≤ θ≤2π and cosθ=8/13, find sin(2θ), cos(2θ), and tan (2θ)?
How can you use double angle formulas to solve this problem?
How can you use double angle formulas to solve this problem?
1 Answer
Dec 12, 2017
Please see below.
Explanation:
.
We know:
But because