If sin 7 x = cos 11x, 0° < x < 90°, then the value of tan 9x is: – McqOptions

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1.	If sin 7 x = cos 11x, 0° < x < 90°, then the value of tan 9x is:
A.	\(\frac{\sqrt{3}}{2}\)
B.	1
C.	\(\frac{1}{\sqrt{3}}\)
D.	\(\sqrt{3}\)
Answer» C. \(\frac{1}{\sqrt{3}}\)

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