Question

Solution for this above question. It's urgent plz help​

Answer 1

Step-by-step explanation:

5sin^2x +cos^2x =4

4sin^2x+sin^2x +cos^2x =4

We know that

Sin^2x+cos^2x =1

So....

4sin^2x +1=4

4sin^2x=3

Sin^2x=3/4

Sinx=sqrt(3)/2

Therefore x is

60 degrees..

Answer 2

Answer:

60

Step-by-step explanation:

Solution below

Let x=theta

5sin^2x+cos^2x=4

5sin^2x+1-sin^2x=4

4sin^2x=3

Sinx=root3/2

Therefore x=theta=60 degree