Question

In triangle abc ,angle B =35 and Angle c = 55, which of the following is true and why?​

Answer 1

Here is your answer
In triangle abc
Angle b=35 , angle c= 55
a+b+c =180
a+35+55=180
a+90=180
a=180-90
a=90

Answer 2

GIVEN : A triangle has been given.

Let the angle of the triangle is A, B and C.

A= ?

B = 35

C = 55

Formula: A+B+C=180

Here,

?+35+55

= ?+90

We should do, sum of given - 180

= 90-180

= 90

So, The C is equal to 90.