Answers

2015-12-24T09:49:57+05:30
Sin ( 81 ) + tan ( 71 ) = sin ( 90 - 81 ) + tan ( 90 - 71 )
= cos 8 + cot 18
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2015-12-24T12:26:29+05:30
Sin 81 + tan 71
= sin(90 - 9) + tan(90 - 19)
= cos 9 + cot 19
0