Trigonometrical Equations
medium

The number of solutions of the equation $\sin x=$ $\cos ^{2} x$ in the interval $(0,10)$ is

A

$2$

B

$4$

C

$6$

D

$8$

(JEE MAIN-2022)

Solution

$\sin ^{2} x+\sin x-1=0$

$\sin x=\frac{-1+\sqrt{5}}{2}=+v e$

Only $4$ roots

Standard 11
Mathematics

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