Answers

2015-01-17T21:06:21+05:30
1. Sol= (1/cos A + sinA/cosA)(1-sinA) = (1+sina)(i-sina)/cosA= 1-sin2A/cosA =cos2A/cosA = cosA 2. Sorry i donno 3. Ans=1 4. Ans= side/area of square is more 5. Sin0. Sin10. Sin30. Sin80. Sin90= cosec90. Cosec80. Sin30. Sin80. Sin90= 1/sin90. 1/sin80. Sin 30. Sin80. Sin90 = sin30 = 1/2
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