The altitude AD of a ΔABC, in which ∠A is obtuse and AD = 10cm. If BD = 10√3cm, then ∠A = ?
115o
100o
105o
110o
The altitude AD of ΔABC, in which ∠A is obtuse and AD = 10 cm, if BD = 10 cm and CD = 10√3 cm, then ∠A =
The altitude AD of in ΔABC is 10 cm. The ∠A is an obtuse angle and BD = 10 cm, CD = 10√3 cm. Find ∠A.