Question

Given:angle 1 =angle 2

If AC = 3, BC = 5, and AB = 7, find AD:


2 5/8

4 1/5

4 3/8

11 2/3

Answer 1

someone help please

Answer 2

Try finding the angle measurement of 1 and 2.

Answer 3

You could use the law of cosines, get <A and then <B, that would give you <C when subtrtacting them from 180 degrees, Angles 1 and 2 would then be 1/2 of angle C.

Answer 4

i'm looking for AD

Answer 5

help me please @ranga

Answer 6

Do u know if any r right angles or if there r any more info?

Answer 7

The angle bisector divides the opposite side in the same ratio as the other two sides:
CA / CB = AD / DB = 3 / 5
5 * AD = 3 * DB
DB = 5 / 3 * AD

Also, AD + DB = AB = 7
Put DB = 5/3 * AD from the first equation into the second:
AD + 5/3 * AD = 7
AD( 1 + 5/3) = 7
AD * 8 / 3 = 7
AD = 7 * 3 / 8 = 21 / 8 = 2.625

Answer 8

What are the choices?

Answer 9

a. 2 5/8
b. 4 1/5
c. 4 3/8
d. 11 2/3

Answer 10

21 / 8 = 2 & 5/8

Answer 11

thankyou

Answer 12

You are welcome.