Question

Given that AB is a straight line . Calculate the value of x in the following cases

Answer 1

Answer:

ii) 3x°+42°=180°.......( supplementary angle measure 180°)

3x=180°- 42°

3x= 138°

x=138/3

x=46°

therefore, 3x...( substitute the value)

3 X 46

= 138°

hence, measure of angle is 138°

iii) 4x°+2x°=180°....( supplementary angle measure 180°)

6x°=180

x=180/6

x= 30

therefore, 1)4x°...( substitute the value)

4X30

120°

2)2x°...( substitute the value)

2 X 30

60°

hence, measure of angle is 120°, 60°

hope it's helpful