Defining and understanding trigonometric ratios

Which one is one of the easy ways to learn trigonometric ratios?

• Sah Coh Toa
• Soh Cah Toa
• Soh Cah Tao
• Soh Ceh Toa

Which is the correct ratio for the sine ratio?

 $\cos\left(\angle\right)=$  

•  $\frac{opposite}{hypotenuse}$  

•  $\frac{adjacent}{hypotenuse}$  

•  $\frac{opposite}{adjacent}$  

Find the trig ratio.

• A

• B

• C

• D

Find the ratio for cos A.

Note: A is the measured angle

• $\frac{30}{16}$

• $\frac{30}{34}$

• $\frac{16}{34}$

If you are given the two sides that are not the hypotenuse, which trig function should you use?

• sin

• cos

• tan

• cot

If you are given the opposite and the hypotenuse, which trig function should you use?

• sin

• cos

• tan

• cot

What is sin(0^o)?

• 1

• -1

• 0

• √2/2

Tan x=?

• 5/4

• 4/3

• 4/5

• 3/4

If you are given the two sides that are not the hypotenuse, which trig function should you use?

• sine

• cosine

• tangent

• cotangent