step by step explanation would be appreciated thanks
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yeah i took and But i don't know what to do after that :/
The complete substitution is... Kind regards
how did that sin x = 2t/(1+tē) thing come here?i don't know about that trigonometry identity.somebody want to prove it to me?
Kind regards
i know that [maths]sin (2x) =2 sin x.cos x [/maths]. but how is it ? and ?
Originally Posted by silvercats i know that [maths]sin (2x) =2 sin x.cos x [/maths]. but how is it ? and ? Now let y = 2x, Thus x = y/2... For the other question, divide top and bottom by -Dan
thanks chisigma and topsquark !!!!!!
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