Question Number 14879 by Tinkutara last updated on 05/Jun/17

Find the value of x, satisfying sin^2 x + sin x − 2 ≥ 0

Answered by ajfour last updated on 05/Jun/17

(sin x+(1/2))^2 =2+(1/4)=((3/2))^2 ⇒ sin x=1 (as sin x≠−2 x=2nπ+(π/2) ⇔ x=nπ+(−1)^n (π/2) .

Commented byTinkutara last updated on 05/Jun/17

Thanks Sir!