Question

find the general solution of 2 cos square x - 3 sin x is equal to zero​

Answer 1

Answer:

x=30°

Step-by-step explanation:

2 cos^2x-3sinx=0

(cos^2x=1-sin^2x)

2(1-sin^2x)-3sinx=0

by solving this

u will get a quadratic eq

and there will be 2 answers

one will be

sinx = -2(which is not possible)

&

sinx=1/2

so

sinx=sin 30°

(comparing both sides)

x=30°