Question

2 cos square theta minus 2 sin square theta is equal to 1 then theta is equal to​

Answer 1

Answer:

2Cos^2@-2sin^2@=1

or, Cos^2@-Sin^2@=1/2

     Cos^2@+Sin^2@=1

___________________

2Cos^2@=3/2

Cos@=sqrt{3/4}

@=30`