1.

If cos27° = x, then the value of tan63° is?

A. $\frac{x}{{\sqrt {1 - {x^2}} }}$$
B. $\frac{x}{{\sqrt {1 + {x^2}} }}$$
C. $\frac{{\sqrt {1 - {x^2}} }}{x}$$
D. $\frac{{\sqrt {1 + {x^2}} }}{x}$$
Answer» B. $\frac{x}{{\sqrt {1 + {x^2}} }}$$


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