If  α  =  3 sin−1(611) and  β  =  3 cos−1(49), where the inverse trigonometric functions take only the principal values, then the correct option(s) is(are)

Considering only the principal values of the inverse trigonometric functions, the value of

For α,β,γ≠0. If sin−1α+sin−1β+sin−1γ=π and (α+β+γ)(α−γ+β)=3αβ, then γ equal to

Given that sin 𝐴=513 and 0∘≤𝐴≤360∘ , what are all possible values of cos A ?

cos(90–A) and sinA are

. Without using a calculator, state the exact values of each of the following.a) cos π6b) sin 3π2c) tan−π6d) sin 3π4e) cos 4π3f) tan 2π3