1.

In a triangle ABC, ∠ABC = 75° and ∠ACB = $$\frac{{{\pi ^c}}}{4},$$the circular measure of ∠BAC is?

A. $\frac{{5\pi }}{{12}}$$radian
B. $\frac{\pi }{3}$$radian
C. $\frac{\pi }{6}$$radian
D. $\frac{\pi }{2}$$radian
Answer» C. $\frac{\pi }{6}$$radian


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