Question

Help!! WIll medal and fan!! Pleaseee help
Suppose an isosceles triangle ABC has A = 45 (degrees) and b=c=3. What is the length of a^2?

Answer 1

@ParthKohli @zepdrix Anyone?

Answer 2

a=BC^2=9.42

Answer 3

Dude that's not even an answer choice, stop telling me false information

Answer 4

@Peach-es1234

Answer 5

What is the answer choices.............

Answer 6

sin A/(BC) =sin C/(4)
BC=sin A/sin C *4= 0.707*4/0.92=3.07
standard ratio of sin to side

Answer 7

so a=BC^2=9.42

Answer 8

2.30
5.27
30.73
12.73

Do one of those say 9.42? No

Answer 9

Well how are we suppose to know if that was correct if the answer choices weren't posted.

Answer 10

use the cosine law:

a^2 = b^2 + c^2 - 2bc cos A

well, it's asking for a^2 , and you have all the unknowns

a^2 = (3)^2 + (3)^2 - 2 * 3 * 3 * cos45
a^2 = 5.27

Answer 11

@TrojanPoem Yay thank yuo you helped me al ot

Answer 12

Any time.

Answer 13

@ronlover101 , Why ?

Answer 14

I was joking you rock!