1.

If sin31° = $$\frac{x}{y}{\text{,}}$$ then the value of sec31° - sin59° is?

A. $\frac{{{x^2}}}{{y\sqrt {{y^2} + {x^2}} }}$$
B. $\frac{{{x^2}}}{{y\sqrt {{y^2} - {x^2}} }}$$
C. $ - \frac{{{y^2}}}{{\sqrt {{y^2} - {x^2}} }}$$
D. $ - \frac{{{x^2}}}{{\sqrt {{y^2} - {x^2}} }}$$
Answer» C. $ - \frac{{{y^2}}}{{\sqrt {{y^2} - {x^2}} }}$$


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