If $$ {1+sin over {1-sin }}={p^{2} over{q^{2}}}$$, then sec is equal to:

$$ {1 over {p^{2}}}+{1 over {q^{2}}}$$

$$ {2p^{2}{q^{2}} over {p^{2}+{q^{2}}}}$$

$${1 over 2} left({q over p}+{p over q} right)$$

$$ {p^{2}q^{2}} over{p^{2}+q^{2}}$$

If $$ {1+sin over {1-sin }}={p^{2} over{q^{2}}}$$, then sec is equa

1.	If $$ {1+sin over {1-sin }}={p^{2} over{q^{2}}}$$, then sec is equal to:
A.	$$ {2p^{2}{q^{2}} over {p^{2}+{q^{2}}}}$$
B.	$${1 over 2} left({q over p}+{p over q} right)$$
C.	$$ {1 over {p^{2}}}+{1 over {q^{2}}}$$
D.	$$ {p^{2}q^{2}} over{p^{2}+q^{2}}$$
Answer» C. $$ {1 over {p^{2}}}+{1 over {q^{2}}}$$