Question

hi please help me .yaar all matgs gurussss​

Answer 1

Answer:

(a) sum of angles of a triangle = 180°

x+y+z = 180°

x/2 + y/2 + z/2 = 1/2(x+y+z) = 1/2(180)

=90°

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(b) In triangle ABC,

A+B+C = 180°

B+C = 180 - 80 = 100°

PBC = B/2

PCB = C/2

PBC + PCB = 1/2 (B+C) = 50°

PBC + PCB + BPC = 180°

50 + BPC = 180°

BPC = 130°

HOPE IT HELPS..........