Question: a) Let t = tan- Prove that = (1+t). de 1-t By using the substitution t = tan and the identities cos 0 =

a) Let t = tan- Prove that = (1+t). de 1-t By

a) Let t = tan- Prove that = (1+t). de 1-t By using the substitution t = tan and the identities cos 0 = integrals. TE 2 3 -de 1+ sin 0 ii. 5 3 sin + 4 cos 0 3 sil de , sin 0 = 2t 1+12 solve the following

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