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Steps Followed
- Simplify LHS and RHS seperately
- In LHS use identity of
- Then cut sinA with cosecA with the identity of
- And cut cosA with secA with the identity of
- Then fill 1+cot^2A and 1+tan^2A in the place of cosec^2A and sec^2A respectively
- After simplify you will get 7+cot^2A+tan^2A
- We know that RHS is equal to 7+tan^2A+cot^2A
- LHS=RHS
- Hence proved
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