In circle A shown below, Segment BD is a diameter and the measure of Arc CB is 36°: Points B, C, D lie on Circle A; line segment BD is the diameter of circle A; measure of arc CB is 36 degrees. What is the measure of ∠DBC? 36° 72° 18° 54°
I will medal
do you know how many degrees is the measure of angle DB ?
if u draw it on the circle it is a very small angle so what do u think it would be ^_^
just by looking at it u can get the answer u don't necessarily need all that information
so to asker BD not can being the diameter bc. than the angle measure of BD need being 360/2 = 180 and this angle has on the image just 148 degrees so there something mistake
bc. suppose the point A is the center of this circle
Creepyboy how ve got this measure of 148 degrees for angle BAD ?
@OtherWorldly do you see about i ve told above ?
<< line segment BD is the diameter of circle A; >> given in the text of this exercise - so in this case angle BAD has 180 degrees and not 148 degrees
yes i do but i do not think there is a mistake because if u where to continue line B to the other side the circle that makes another angle right? and 148 + X = 180 if u look at the angle it would be just the right amount for it to equal 180 so nothing is wrong with the 148 angle
no no than BD is the diameter of circle A so in tis case this center of circle A ,the point A so need being on this diameter line and than you unit BD to being the diameter how you suppose it above so than this center point A of circle A not will be on this diameter line yes ?
BD is not half the circle BA is point A is on the diameter line so point A is the mid point remember we r looking for the angle DBC
@agent0smith please what is so difficile in this exercise ?
XD can i just say the answer
but than you read the text of this exercise so given that BD is diameter
yeah..... thats weird
@agent0smith please help me make understanding this image not is right
maybe @ThatCreepyBoy put the problem wrong..?
do u know the answer @jhonyy9
because even in this mix up u don't need that information to find the answer
i just like clearify to asker that idk. how he got this angle has 148 degrees bc. this is wrong sure
The information in the problem is incorrect, sure, but from the question and the picture u can find the answer
sorry but i think from this image not can find it correct
ok so ill just say what i think the answer is and u guys can figure out if its right or wrong i think it is C
<< we need calculi the measure of ANGLE DBC - how juts bc. angle DBC not exist there
or than exist so these given choices not are right
@agent0smith your opinion about these please ?
given that DB is diameter so tis mean that angle DAB not equal 148 degrees sure right ?
than we drawing this angle << What is the measure of ∠DBC? >> where will be this angle DBC ?
|dw:1475529203693:dw|
but in this case BD not is diameter
|dw:1475529601431:dw|
Join our real-time social learning platform and learn together with your friends!