What is the length of side x in the triangle below?

A. 18.46
B. 28.48
C. 24.63
D. 21.21
E. 19.65
F. 24.04
(Picture below.)

Question

What is the length of side x in the triangle below?


 		A.	18.46
 		B.	28.48
 		C.	24.63
 		D.	21.21
 		E.	19.65
 		F.	24.04
(Picture below.)

anonymous · Answer

attachment

anonymous · Answer

SOH-CAH-TOA
|dw:1359045969808:dw|
You have the adjacent and hypotenuse, so we use cosine. 
cos = adj/hyp
cos45 = 17/x

anonymous · Answer

the given triangle can be drawn as |dw:1359046012943:dw|

anonymous · Answer

use eqn which @jazy  told

anonymous · Answer

your post is blinking y

anonymous · Answer

cos(45) = 17/x
0.707 = 17/x
Multiply both sides by x.
0.707x = 17
Divide both sides by 0.707.
x = 17 / 0.707
What do you get?

anonymous · Answer

1377.69?

anonymous · Answer

@tayluvsya what?

anonymous · Answer

By the way, this calculator helps a lot with these kind of equations. My teacher recommended it. (: http://web2.0calc.com/

anonymous · Answer

Marco divide 17 by 0.707.

anonymous · Answer

your question was blinking it stopped never mind

anonymous · Answer

Oh cool! Thanks @jazy. 
And I got 24.05?

anonymous · Answer

Yeah you're right. (: 
Actually when I did cos(45) it was actually 0.7071. So 17 divided by 0.7071, rounded would be 24.04.

anonymous · Answer

Ups, I rounded it wrong :p

anonymous · Answer

No you got it right, I rounded too early in the process, sorryyyy! (: