Question

What is the measure of ∡DBC?

Answer 1

you have any formulas for us?

angle of an inscribed angle?

Answer 2

n circle A shown below, Segment BD is a diameter and the measure of Arc CB is 54°. that is all it gives me

Answer 3

hold on i'll find a formula for you :)

Answer 4

Okay thanks!

Answer 5

These are the possible answers
54°

36°

27°

63°

Answer 6

do you know what the angle subtended by a diameter is equal to?

Answer 7

i.e. angle DCB

Answer 8

...No? :(

Answer 9

This might help you: http://www.cut-the-knot.org/Outline/Geometry/AngleOnDiameter.shtml

Once you know that the answer should be fairly obvious

Answer 10

I don't know what that means.. can you just explain it?

Answer 11

what have you been taught about circles so far?

Answer 12

http://www.youtube.com/watch?v=MyzGVbCHh5M&feature=relmfu

I will say it is 27 but hold on

Answer 13

do you recognise any of these theorems? : http://www.mathsteacher.com.au/year10/ch06_geometry/08_angle_at_centre/circ.htm

Answer 14

we are learning parts of a circle, like diameter, tangent, arc length, ect

Answer 15

@timo86m there is no point is just giving out an answer without any explanation

Answer 16

have you been taught about subtended angles?

Answer 17

i showed her a vid

Answer 18

@timo86m the aim of OpenStudy is to guide the user to an answer - not just provide an answer. Let the user work it out themselves. That way they learn more.

Answer 19

@asnaseer no I havn't.
@timo86m Thank you

Answer 20

I showed her a vid that lead to my answer

@countrygirl10 did you watch the vid?

Answer 21

yes did

Answer 22

@timo86m you put a link to a video and provided an answer - which happens to be wrong

Answer 23

did it help you learn a bit?

Answer 24

@countrygirl10 : have you seen any diagrams like this: