ह०६८, 500 + oL],800oLT (WIS +o£9 SLo – InterviewSolution

1.

ह०६८, 500 + oL],800oLT (WIS +o£9 SLo

Answer»

sin^2 63 + sin^2 27/cos^2 17 + cos^2 73

(using cos (90 - x) = sinx sin(90 - x) = cosx sin^2 x + cos^2 x = 1)

= sin^2 63 + cos^2 (90 - 27)/ sin^2 (90 - 17) + cos^2 73

= sin^2 63 + cos^2 63/ sin^2 73 + cos^2 73

= 1

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