Question

In triangle ABC 13 years ago

Answer 1

cos(45) ?

Answer 2

10.5?

Answer 3

Sure thing!

Answer 4

still getting 10.5?

Answer 5

answers are, http://gyazo.com/92cbdd5dd84b565c7cad4bddeb4ec024

Answer 6

OHHHHHHHHHH!!!

Answer 7

u are doing a 45-45-90 triangle...

Answer 8

okay when you work with 45 45 90's this is how they look

Answer 9

alright, then what?

Answer 10

so if you know a, and you are finding the hypotenuse, you just plug it in.. so it would be 20 square root 2

Answer 11

when you are working with a 45 45 90 you arent dealing with the squar root of three so you can eliminate answer a and answer b

Answer 12

So the answer is D?

Answer 13

you got it :)

Answer 14

Thank you! I actually understand it a little better now!