Find\[\angle BAC\].
A) \[{{59}^{o}}\]
B) \[{{69}^{o}}\]
C) \[{{79}^{o}}\]
D) \[{{89}^{o}}\]
Correct Answer: B
Solution :
The sum of the three angles in a triangle is\[{{180}^{o}}\]. \[\angle BAC={{180}^{o}}-({{90}^{o}}+{{21}^{o}})={{69}^{o}}\]
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