Answer:
Step-by-step explanation:
yes, as below
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
in the picture there is a Hyp and an Opp
so, use the function that has those sin has those , huh
then,
sin(Ф) = 12/13
Ф = arcSin(12/13)
Ф = 67.38 °
now we know that angle.. now we can get cos
cos(67.38 °) = adj / 13
13 * cos(67.38 °) = adj
oh it's exactly
5 = adj
I feel like that's right since it worked out to be exactly 5 :)
Cos(Ф) = 5 / 13
there is your answer :)
