Basic Trigonometric Ratios (for Rt. Triangles)

Question 1

What is the Tangent Ratio?

Answer 1

For acute

opp

Remember adjacent and opposite legs are dependent on perspective vertex (which vertex is named)

SOHCAHTOA

Question 2

What is the Sine Ratios?

Answer 2

For acute

leg opp to

Remember adjacent and opposite legs are dependent on which vertex you are starting on.

SOHCAHTOA

Question 3

What is the Cosine Ratio?

Answer 3

For Acute

leg adjacent to

Remember adjacent and opposite legs are dependent ton the vertex which you are starting on.

SOHCAHTOA

Question 4

What does SOHCAHTOA mean?

Answer 4

SOH

Sine: opp / hypotenuse

CAH

Cosine: adjacent / hypotenuse

TOA

Tangent: opposite / adjacent

Question 5

What is arc tan/cosine/sine?

Answer 5

Arc tan/cosine/sine is when you put tan/cosine/sine to the ^-1 power. When you do not know the angle measurement in which you are finding the tan/cosine/sine but you know the side measurements, used ARC

tan^-1 (75/35) =

tan 65 = 75/x to find a side

Question 6

When to use ARC or regular?

Answer 6