Question

9. The value of tan [cos-1(-1/2)]
(a) √3
(b)-√3
(c)1/√3
(d) - 1/√3
Other:​

Answer 1

Answer:

Explanation: From the cos−1(12) we have the side adjacent to ∠θ=1 and the side hypotenuse=2 . So this is a 30∘−60∘−90∘ triangle and θ=60∘ therefore the opposite to ∠θ=√3 .