Question

express (sec^2x-1)(cosx)​

Answer 1

Answer:

=tan^2x*cosx

=sin^2x/cos^2x*cosx

=tanx.sinx

Step-by-step explanation:

use trigonometric identity.

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Answer 2

Answer:

secQ- cosQ

Step-by-step explanation:

${ \sec ^{2} q - 1} \times {cosq}$

1/cos ^2 q - 1 ×( cos q)

=1/cos Q - cos Q

secQ- cosQ

Hope it helps