Question

8. ABD and BDC are complementary, find the measures of both angles if ABD = (x - 30)°and BCD=2x​

Answer 1

Answer:

we know that the sum is complementary=90°

ATQ,

(x-30)+2x=90°

x-30°+2x=90°

x+2x=90+30°

3x=120

x=120/3

x=40

so angle

ABD=(x-30)

=40-30

=10°

angle BCD=2x

=2×40

=80°