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3/4∫9/25dx/((1+√x) x-x2 ) ...
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0∫2π(sinxcos[x]-cosxsin[x])/(cosxcos[x]+sinxsin[x])dx ...
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solve sin-112x +sin-112√3x =sin-1(-1 ) ...
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m1.m2 =-1 is the condition for perpendicular lines.. how is x=0 and y=0 perpendicular? ...
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prove tan a + tan 2a + tan 3a = tan a . tan 2a . tan 3a my friend gave me from school.. i cant get anything to work on.. this is so tough :( ...