1.

If $$ {tan ={a over b}}$$ then $$ {a sin +b cos over{a sin -b cos }}$$ is

A. $$ {a over {a^{2}+b^{2}}}$$
B. $$ {b over {a^{2}+b^{2}}}$$
C. $$ {a^{2}-b^{2} over {a^{2}+b^{2}}}$$
D. $$ {a^{2}+b^{2} over {a^{2}-b^{2}}}$$
Answer» E.


Discussion

No Comment Found