Question

two straight lines ab and CD intersect at O if b o d is 63 degree. find BOC

Answer 1

Angle boc+bod=180

Boc=180-63

Boc=117

Answer 2

$\mathbb{ SOLUTION }$

Given :
AB and CD are two straight lines
$\angle{BOD}$ = 63°

$\angle{BOD}$ + $\angle{BOC}$ = 180°
[ $\therefore$ LINEAR PAIR (CD is a straight line) ]

so,
=> 63° + $\angle{BOC}$ = 180°

=> $\angle{BOC}$ = 180° - 63°

=> $\angle{BOC}$ = 117°

Hence,
$\angle{BOC}$ = 117°