Question

If r(∅)= sin ∅/ cos ∅ and s(∅)= cos ∅ + sin (∅ - 300°), find √3/2 r(180°) + s(30°).

Answer 1

√3/2 + 1

Explanation:

√3/2 r(180°) + s(30°)

√3/2 sin(180°) / cos(180°) + cos(30°) + sin(30° − 300°)

0 + cos(30°) + sin(-270°)

cos(30°) + sin(90°)

√3/2 + 1