Question

please i need correct answer.... ​

Answer 1

Answer:

1. x=90°+30°-180°

120-80

60.

2. 80+20-180

100-180

=80

3. 90+40-180

130-180

=50

Answer 2

Answer:

sister this is the answer for question a). i and ii

i) x = 3/2 = 1½ = 1.5

ii)sister this I don't know the formula but the answer is x = 3