Answers

2014-01-08T13:29:23+05:30
1 is the answer okkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk
thank you

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2014-01-08T20:24:49+05:30
 L.H.S. = tan 10° tan 15° tan 75° tan 80°. = tan (90° - 80°) tan 15° tan (90° - 15°) tan 80°. = cot 80° tan 15 cot 15° tan 80
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