Trigonometry

Question 1

When do you use trigonometry?

Answer 1

When a right-angle triangle is given.

Question 2

Criteria to use trigonometry?

Answer 2

1. Reference angle is given

2. Two lengths (not hypotenuse) is given

Question 3

Basic formula for trigonometry?

Answer 3

TOA
CAH
SOH

Question 4

What do you use on the calculator to find length?

Answer 4

tan(
cos(
sin(

Question 5

What do you use on the calculator to find the [reference] angle?

Answer 5

tan-1 (
cos-1 (
sin-1 (