Question

1.One of the angles of a triangle is half the sum of other two angels. Find the angle
2.Pawan is thrice as old as his sister. Sum of their ages is 40 years. Find their ages
please give ans step by step explaination it's urgent I'll mark you brainlist.​

Answer 1

Answer:

In which measure of angleB is equal to the measure of remaining angles that is angleA and angleC

So, in triangle ABC,

angleA + angleC= angleB …………(1)

Now, in triangle

angle A +angle B+ angle C =180°

= angle B + ( angleA + angleC) =180°

= angleB + angleB =180°…………..from(1)

=2 angleB = 180°

= angle B = 180°/2

=angleB= 90°

So, one angle of triangleABC is 90° or if one angle of triangle is 90° this triangle is known as right angled triangle.

So, it is right angled triangle

Thank you………..

2.3S=P

S+P=40

S=10

P=30

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