Question

please solve it in copy or by writing​

Answer 1

Here we have to find x in the given figures

For these questions we should know that sum of all the three angles of a triangle is 180°

1) The two angles are given to be 45° and 30°

x + 45 + 30 = 180

x + 75 = 180

x = 180 - 75

x = 105°

2) It is a right-angled triangle

So, the two angles are 90° and 30°

x + 90 + 30 = 180

x + 120 = 180

x = 180 - 120

x = 60°