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 2 years ago
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.)
 2 years ago
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.)

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jazy
 2 years ago
Best ResponseYou've already chosen the best response.1SOHCAHTOA dw:1359045969808:dw You have the adjacent and hypotenuse, so we use cosine. cos = adj/hyp cos45 = 17/x

ashishthomas7
 2 years ago
Best ResponseYou've already chosen the best response.0the given triangle can be drawn as dw:1359046012943:dw

ashishthomas7
 2 years ago
Best ResponseYou've already chosen the best response.0use eqn which @jazy told

tayluvsya
 2 years ago
Best ResponseYou've already chosen the best response.0your post is blinking y

jazy
 2 years ago
Best ResponseYou've already chosen the best response.1cos(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?

jazy
 2 years ago
Best ResponseYou've already chosen the best response.1By the way, this calculator helps a lot with these kind of equations. My teacher recommended it. (: http://web2.0calc.com/

tayluvsya
 2 years ago
Best ResponseYou've already chosen the best response.0your question was blinking it stopped never mind

marcoduuuh
 2 years ago
Best ResponseYou've already chosen the best response.1Oh cool! Thanks @jazy. And I got 24.05?

jazy
 2 years ago
Best ResponseYou've already chosen the best response.1Yeah 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.

marcoduuuh
 2 years ago
Best ResponseYou've already chosen the best response.1Ups, I rounded it wrong :p

jazy
 2 years ago
Best ResponseYou've already chosen the best response.1No you got it right, I rounded too early in the process, sorryyyy! (:
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