1+tan square 30degree =sec square 30degree
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1 +tan^2A=1. +sin^2A/cos^2A
=cos^2A +sin^2A/cos^2A
=1/cos^2A. {by identity}
=sec^2A
HENCE PROVED
=cos^2A +sin^2A/cos^2A
=1/cos^2A. {by identity}
=sec^2A
HENCE PROVED
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this is the answer i got when i did this sum. i dont know when you asked this question but i am replying now cause i think you may need it.
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