Question

2. Find the value of x using SohCahToa.

Answer 1

Where is the rest of the question?

Answer 2

@sweetburger I was getting to it :o

Answer 3

Ok so your given theta and you are given the length of the hypotenuse and you know that x is represented by the adjacent side to theta

Answer 4

Should you use sin, cos, or tan for this problem?

Answer 5

Wait, what ? I'm confused.

Answer 6

Don't be. Instead, write out all three of the most-used trig functions (sine, cosine and tangent) and how they are defined.

For example, the tangent of the angle x is tan x = opposite side length / adjacent side length.

The given diagram shows that the hypotenuse of the triangle is 8, the adjacent side is x and the included angle is 35 degrees.

From the 3 definitions (sine, cosine, tangent), choose the one that makes use of the given info: hypotenuse, adjacent side, angle. Set the other two definitions aside.

Answer 7

Hmm... is it cosine ?

Answer 8

Cosine is the only one that makes use of the hypotenuse and the adjacent side.

Answer 9

I tried using cosine and got cos 35º = x/8
using this equation I multiplied both sides by 8 to get x which gave me 6.6=x
Is this the correct answer ?