Complementary Angles

Complementary Angles
In a right triangle,sum of two angles other than a right angle is complementary,so if we take that complementary angles as A and B,then,A=90-B or B=90-A,so we can write,

       sin(90-A)=cosA,
       cos(90-A)=sinA,
       tan(90-A)=cotA,
       cot(90-A)=tanA,
       cosec(90-A)=secA,
       sec(90-A)=cosecA,
and same thing you can do for angle B too.

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