Question

1. d/DX (sec x . cosec x )
2. d/DX ( tan x . sec x )
3. d/DX (cosec x . cot x ) ​

Answer 1

Y =(Sec x . Cosec x)

$\frac{dy}{dx} = sec x. ( - cotx) + cosecx.tanx$

$\frac{dy}{dx} = - cotx.secx + cosecx.tanx$

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Y = (Tanxx . Secx)

$\frac{dy}{dx} = Sec x$

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Y = Cosecx. Cotx

$\frac{dy}{dx} = - cosecx$

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