hello everyone!!! plz... help me in this question
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anmol4430:
hy
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put values so we need to prove that (cos^2 a/cos^2 b+cos^2 a/sin^2 b)cos^2 b=cos^2 a/sin^2 b
so considering LHS
cos^2 a+cos^2 a cos^2 b/sin^2 b= cos^2 a sin^2 a + cos^2 a cos^2 b/ sin^2 b =
cos^2 a(cos^2 b + sin^2 b)/sin^2 b= cos^2 a/sin^2 b
hence proved
hope it helps ✌️✌️
so considering LHS
cos^2 a+cos^2 a cos^2 b/sin^2 b= cos^2 a sin^2 a + cos^2 a cos^2 b/ sin^2 b =
cos^2 a(cos^2 b + sin^2 b)/sin^2 b= cos^2 a/sin^2 b
hence proved
hope it helps ✌️✌️
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am 6th class sorry i dont have algebre started
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