Prove the following identities: [If it is a one step problem please state the formula used) l_l d) sin{z+y) _ tan[z}+tan(y] sin{zy) tan[z}tan(y] l:l e}
Prove the following identities: [If it is a one step problem please state the formula used) l_l d) sin{z+y) _ tan[z}+tan(y] sin{zy) tan[z}tan(y] l:l e} sec[t) _ _ (356(1) tamt}
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