Q8 (i)

cos A / 1- tan A

-

sin² A / cos A - sin A

= sin A + cos A
(ii) (sec A - cosec A)(1 + tan A + cot A)= tan A sec A - cot A cosec A
(iii)

tan²θ / tan²θ-1

+

cosec²θ / sec²θ-cosec²θ=

1 / sin²θ-cos²θ

solutions

Solution

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