If n=CosA/CosBm=SinA/SinBSo prove that- (m2-n2)Sin^2B=1-n2
Upamanyu Singh , 6 Years ago
Grade 12th pass
Trigonometry> If n=CosA/CosB m=SinA/SinB So prove that-...
1 Answers
Aditya Gupta
Last Activity: 6 Years ago
wehave to prove (m2-n2)Sin^2B=1-n2
or equivalently m^2sin^B+n^2cos^2B=1
given that
n=CosA/CosB and m=SinA/SinB
so, LHS = sin^2A+cos^2A=1=RHS
hence proved
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