1.

In the adjoining figure the value of \[\mathbf{secl}{{\mathbf{7}}^{{}^\circ }}-\mathbf{sm7}{{\mathbf{3}}^{{}^\circ }}\]is

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


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