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Please answer this question related to trigonometric identities

Please answer this question related to trigonometric identities

Question Image
Grade:10

1 Answers

Harshit Singh
askIITians Faculty 5959 Points
one month ago
Dear Student
LHS=
cosecA ( cosecA +1 + cosecA -1 ) / (cosec2A –1)
= cosecA ( 2cosecA ) /cot2A
= 2 sin2A cosec2A sec2A
= 2 sec2A
= RHS

Thanks

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