Question

sin 2x + cosx =0
plzzz ans....​

Answer 1

Answer:

Sin2x+Cosx=0

2 Sinx Cosx + Cosx = 0

Cosx ( 2Sinx +1) =0

Cosx = 0

Cosx = Cos(π/2)

x=π/2

2Sinx =-1

Sinx = Sin (π+π/6)

x = 7π/6

X=π/2 , 7π/6

Step-by-step explanation:

Hope it helps you

Jai Hind