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[" 20Prove that "sec^(2)theta+csc^(2)the...

[" 20Prove that "sec^(2)theta+csc^(2)theta>=4],[" We have,"]

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Prove that sec^(2) theta + "cosec"^(2) theta = sec^(2) theta "cosec"^(2) theta

Prove that sec^(2) theta + cosec^(2) theta = sec^(2) theta * cosec^(2) theta

Prove that cosec^(2) theta + sec^(2) theta = cosec^(2) theta sec^(2) theta .

Prove that : sec^(2)theta+"cosec"^(2)theta=sec^(2)theta*"cosec" ^(2)theta

Prove that : sec^(2)theta+"cosec"^(2)theta=sec^(2)theta*"cosec" ^(2)theta

Prove that : sec^(2)theta+"cosec"^(2)theta=sec^(2)theta*"cosec" ^(2)theta

Prove that: sec^(2)theta+"cosec"^(2)theta=sec^(2)thetaxx"cosec"^(2)theta.

Prove that sqrt(sec^(2)theta + cosec^(2)theta) = tantheta + cottheta .

Prove that sqrt(sec^(2)theta + cosec^(2)theta) = tantheta + cottheta .

Prove that sqrt( sec^(2) theta + "cosec"^(2) theta )= tan theta + cot theta .