proved that -
sec^2A+sec^2B=sec^2Asec^2B
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Step-by-step explanation:
sec^2A+ sec^2B
=sec^2A+ cosec^2A
=1/cos^2A +1/sin^2A
=Sin^2A + cos^2A/
cos^2A.sin^2A
=1/cos^2A. sin^2A
=sec^2A. sec^2B
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