Question

find the unknown angle ​

Answer 1

Answer:

75°

Step-by-step explanation:

80°+25°+ C=180°

105°+C=180°

C=180°-105°

=75°

HOPE YOU UNDERSTOOD!!!

Answer 2

Answer:

In the triangle 2 sides are given

25° and 80°

we know that the sum of the three angles of any triangle is equal to 180°

so , we get the equation

25 + 80 + c = 180

105 + c = 180

c = 180 - 105

c = 75

c is 75°

we can prove that the c is 75° by

25° + 80° + 75° = 180° .

hence the value of c ( the third angle ) is 75°

hope it helps