Question

Prove this.... Please

Answer 1

•First change tan@ into sin@/cos@.

• After changing we use chain rule here.

Formula used:

$\star \boxed{ \red{ \bold{\frac{d}{dx} \sqrt{x} = \frac{1}{2 \sqrt{x} } }}} \\ \\ \star \ \bold{\frac{d}{dx} sinx \: = cosx} \\ \\ \star \bold{\frac{d}{dx} cosx = - sinx} \\ \\ \star \boxed{ \red{\bold{ \frac{d}{dx} ( \frac{u}{v } ) = \frac{v \: \frac{d}{dx}u \: - u \: \frac{d}{dx}v }{ {v}^{2} } }}}$