1.

If $sin21^{0}$ = $\frac{x}{y}$ , then $sec21^{0} - sin69^{0}$is equal to1). $\frac{x^{2}}{y\sqrt{y^{2}-x^{2}}}$2). $\frac{y^{2}}{x\sqrt{y^{2}-x^{2}}}$3). $\frac{x^{2}}{y\sqrt{x^{2}-y^{2}}}$4). $\frac{y^{2}}{x\sqrt{x^{2}-y^{2}}}$

Answer»

$\FRAC{X^{2}}{y\sqrt{y^{2}-x^{2}}}$ : - OPTION 1



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