Question

In circle A shown below, Segment BD is a diameter and the measure of Arc CB is 36°:

Answer 1

What is the measure of ∠DBC?

36°
72°
18°
54°

Answer 2

@Orange_ Is this one more easy to understand?

Answer 3

as BAD is a diameter m < BCD = 90 degrees
Now if you can find m < BDC you can find m <DBC

Answer 4

What do you mean?

Answer 5

i think m< CDB = measure of the given arc

Answer 6

the 3 angles of a triangle add up to 180 so <BDC = 180 - (90 + < BDC)

Answer 7

126

Answer 8

* correction < DBC = 180 - 990 + < BDC)

Answer 9

180 - 126

Answer 10

54

Answer 11

yep

Answer 12

Yea - i looked up the relevant theorem about arcs .

Answer 13

We never did those in school. (Many years ago!!!!!)

Answer 14

I'm talking about just after WWII.

Answer 15

Oh wow, thanks though!!!