Question

What is the length of side AD?
Answer 39.23 cm
47.32 cm
81.96 cm
94.38 cm

Answer 1

Find AE and ED and add.

Answer 2

how this is what i struggle at

Answer 3

To do that, note that BCE is a right angle. So angle B of BCD is 90 - 30 = 60 degrees. You can now find BD. Then use that to find ED. Then find BE as well to solve AE.

Answer 4

i cant figure it out

Answer 5

tan(45) = AE/BE

tan(45) = AE/30

30*tan(45) = AE

30*1 = AE

30 = AE

AE = 30

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tan(30) = ED/BE

tan(30) = ED/30

30*tan(30) = ED

ED = 30*tan(30)

ED = 30*(sqrt(3)/3)

ED = 10*sqrt(3)


---------------------------

AD = AE + ED

AD = 30 + 10*sqrt(3)

Answer 6

@jim_thompson5910 = BE is not 30 units long.

Answer 7

yes it is, it's the same length as CD

Answer 8

im so lost

Answer 9

D'oh, you gotta be kidding me.

Answer 10

Oh I forgot to give the approximate answer


AD = 30 + 10*sqrt(3)

AD = 30 + 17.3205

AD = 47.3205


The answer is then 47.32

Answer 11

i have 2 pll sayin somethin different sorry

Answer 12

@jim_thompson5910 's solution is easier. Didn't notice BE = CD and overthought the problem. Since BE = 30 cm, then use tan to find AE. Then use tan to find ED and add them together.