Question

If the measure of DEF is 76, what is the measure of DE?

Answer 1

@jim_thompson5910 @Mertsj @Jonask

Answer 2

is this the wrong picture?

Answer 3

no :)

Answer 4

you mention DEF, but points D, E, or F are not in the picture

Answer 5

OH omygosh Iam sooo sorry xD I didn't mean to put that lol

Answer 6

that's fine, so the actual problem is just what we see in the pic?

Answer 7

Yeah!! lol @jim_thompson5910 that's the correct one

Answer 8

I subtracted then divided

Answer 9

we're using the same formula from a few problems ago

(m greater arc XZ - m lesser arc XZ)/2 = angle XYZ

(230 - q)/2 = 50

230 - q = 50*2

230 - q = 100

q = ???

Answer 10

I got 130?

Answer 11

same here

Answer 12

another way to look at the problem is that 1 complete circle measures 360 degrees. the major arc is 230 degrees, so the minor arc is what's left from 360 degrees.

Answer 13

Okay thank you so much!! I have another simular question to this coming up :)