Help with <span title="trignometry!!!!!!!!!!!!!!!!?">trignometry!!!!!!!!!!!!!!...</span>

Question

well i need some help in the following type of sums.

we have loads of such sums lik

sin3A+cos3A=xyz types of sums.

can anyone tell me a foolproof technique to solve such l.h.s=r.h.s sort of sums.thanks.

Answer 1

i do know a foolproof technique but i&#039;m sure you&#039;re not going to like it.

practice

each problem in your book will show you a different trick to solving trig relationships.  there could not possibly be a lhs=rhs because there is more than on discreet answer.  what will help is being able to visualize things like sin3a + cos3a.  you need a good graphing calculator so that you are able to relate the formula to the shape.  remember that the more complicated is a puzzle, the more ways there are to solve it.