Asked by Olumide

In the isosceles triangle ACB AB=AC=4cm BAC= 30. and CN is an altitude. Find BN
Answered by Steve
(BC/2)/4 = sin 15°
so, BC = 8sin15°

angle BCN is also 15°

BN/BC = sin 15°
BN = 8 sin^2 15° = 4-2√3
Answered by Tigani
Square root 3
Answered by Michael
Good one and I love it.
Answered by Anonymous
But the textbook answer is 2(2-√3)cm
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