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Trignometry

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2 Apr 2008 14:43:05 IST

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Trigonometric Functions

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If A,B,C and D are angles of a quadilateral and sin A/2 sin B/2 sin C/2 sin D/2=1/4,prove that A=B=C=D=/2

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prateek

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Joined: 1 Apr 2008

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3 Apr 2008 17:19:29 IST

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solving it by SOT concept.....put values os sina/2,sinb/2,sinc/2,sind/2...where the numerator of any two will be same so the sqrts get cancelled...and in denominator we get abcd...so on the whole we get=1/4...solvin it we can prove ...

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