Question

Find the value of x.
X
35°
18.

Answer 1

Explanation:

Use SOH CAH TOA to recall how the trig functions fit on a triangle

SOH: Sin(Ф)= Opp / Hyp

CAH: Cos(Ф)= Adj / Hyp

TOA: Tan(Ф) = Opp / Adj

use CAH since it's got the pieces we have and want to find

Cos(35) = x / 18

X = 18 * Cos(35)

X = 14.7447

14.7 looks good :)

Answer 2

X=14.7

cos(35)=x/18

x=cos(35)*18

x=14.7