Question

Given that `sinθ = 0.6820` and that `θ` is in quadrant III, find `sin2θ` and the quadrant in which `2θ` lies?

Answer 1

first quadrant ; `sin 2theta = 0,997564cdots`

Explanation:

`theta = 43^0 + 180^0`

`2theta = 86^0 + 360^0`