Question

If 2 sin square theat minus cos square theta equals to 2 then find theta

Answer 1

$\large{\mathcal{\blue{Answer}}}$

$2sin {}^{2} - cos {}^{2} = 2 \\ 2sin {}^{2} - (1 - sin {}^{2} ) = 2 \\ 2sin {}^{2} - 1 + sin {}^{2} = 2 \\ 3sin {}^{2} = 2 + 1 \\ 3sin {}^{2} = 3 \\ sin {}^{2} = \frac{3}{3} \\ \sin(?) = 1$

$\huge{\boxed{\mathcal{\blue{theta=90degree}}}}$