Question

How can i remember the trigonometric ratios of specific and complementary angles

Answer 1

To easily memorise trigonometric values first memorise all the trigonometric ratios of sin    by reversing this order of sin0 to sin 90 , we get cos 0  to cos 90               ..... now for finding tan .... just divide sin by cos and cancel the denominators              ...... reverse sin cos and tan to obtain coses sec and cot respectively 

hope this helped :)