Q6 of 53 Page 153

m∠B = 90 in ΔABC. is altitude to .

If BM = 2√30, MC = 6, find AC.

4.JPG


BM = 2


MC = 6


Applying Pythagoras theorem :


BM2 = CM × AM


⇒ 120 = 6 × AM


⇒ AM = 20


AC = AM + MC = 26 units


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