( secA+cosA) ( secA-cosA) = tan^2A+sin^A
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Answered by
31
Answer:
Step-by-step explanation:
Taking LHS:
= (secA+cosA) (secA-cosA)
= (sec²A -- cos²A)
= {(1+tan²A) - (1 - sin²A)}
= ( 1+tan²A - 1 + sin²A)
LHS = RHS
Answered by
1
Step-by-step explanation:
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