Question

find the value of A,B,C give reason in each case.
​

Answer 1

Step-by-step explanation:

∆BAC =90°

let we assume M between line B & C to find all angles..

∆AMB=90°

We know that all angles of triangles is 180°so

∆BAM+∆ABM+∆BMA=180°

30°+∆ABM+90°=180°

120°+∆BMA=180°

∆BMA=180°-120°

∆BMA=60°