Question

find the unknown angles in each of the following figures​

Answer 1

$a) \: x + 115 = 180 \\ x = 180 - 115 \\ x = 65 \\ x + y + 40 = 180 \\ 65 + y + 40 = 180 \\ y = 180 - 105 \\ y = 75$

$b) \: z = 180 - (60 + 55) \\ z = 180 - 115 \\ z = 65 \\ z + y = 180 \\ y = 180 - 65 \\ y = 115 \\ x + y + 40 = 180 \\ x + 115 + 40 = 180 \\ x = 180 - 155 \\ x = 25$

HOPE THIS HELPS U.

${\huge\mathcal{\fcolorbox{lime}{black}{\pink{FROM☞ ADESH \: KUMAR}}}}$