Question

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Answer 1

Step-by-step explanation:

Hence proved

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Answer 2

Answer:

To prove angle cpb=90degree

Step-by-step explanation:

Const-produce CA to p such that ap=ac.

Proof-ab=ac and ab=ap(since its an isosceles triangle)

So ap=ac.

Ab=ac then angle abc=angle acb

Ap=ac then angle apc=angle acp

Therefore, angle abc+angle apc=angle acb+angle acp

Angle abc+angle apc=angle bcp(angle acb+angle aco=angle bcp)

Angle abc+ angle apc +angle bcp=2angle bcp(adding angle bcp on both sides)

2angle bcp=180(since sum of the angles of triangle abc=180)

Angle bcp=90

Hence,angle bcp is a right angle