Math, asked by DRAGONWORLD, 1 year ago

anybody question no. 21

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Answered by MOSFET01

3

Theta =A

cosec²A+sec²A
1/sin²A+1/cos²A
(cos²A+sin²A)/sin²A.cos²A
1/sin²A . cos²A
=>cose²A . sec²A
RHS=LHS

Hence proved

DRAGONWORLD: thanks

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