15-01-2021
Mathematics

contestada

if cos x = 2 sin x, so the value of sin x cos x is ...

Respuesta :

abinashregmi01234 abinashregmi01234

15-01-2021

Answer:

1/2

Step-by-step explanation:

As cosx= 2sinx,

now,

so, sinxcosx = sinx(2sinx) = 2 sin²x

Again,

2sin²x =1

sin²x= 1/2

sinx = 1/ root 2

sinx = sin 30

x = 30

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