Question

A right triangle has side lengths d, e, and fas shown below.

Use these lengths to find cosx, tanx, and sinx.
2
f
d
COSX =
tanx =
sinx =
0
0
0

Answer 1

• cos(x) = f/e
• tan(x) = d/f
• sin(x) = d/e

Explanation:

You want to find the values of cos(x), tan(x), and sin(x) in right triangle DEF as shown in the figure.

Trig relations

The relationships between trig functions and sides of a right triangle are summarized in the mnemonic SOH CAH TOA. This tells you ...

Cos = Adjacent/Hypotenuse

cos(x) = f/e

Tan = Opposite/Adjacent

tan(x) = d/f

Sin = Opposite/Hypotenuse

sin(x) = d/e

<95141404393>