(2,1) is the solution because its where they both intersect..
1. -1
2. 1
3. 5
4. -1
5.-1
6. -3
sin(x) = 2cos(x)
tan(x) = 2
tan⁻¹[tan(x)] = tan⁻¹(2)
x ≈ 63.4
sin(2x) = sin[2(63.4)]
sin(2x) = sin(126.8)
sin(2x) ≈ 0.801
Two angles that added together equal 90 degrees
