Question

Sin(2x) - 3cos x = 0

Answer 1

Answer:sin(inverse)(3/2)

Explanation:

sin(2x)-3cosx=0 sin2x=2sinxcosx

2sinxcosx-3cosx=0

2sinxcosx=3cosx

Divide both sides by cosx

2sinxcosx ➗ cosx =3cosx ➗ cosx

2sinx=3

Divide both sides by 2

2sinx ➗ 2=3 ➗ 2

sinx=3/2

x=sin(inverse)(3/2)

Answer 2

2π3,(4π3)

Explanation: