Intro to Trigonometry

What is the sine ratio?

• sin (A) = opp/hyp

• sin (A) = adj/hyp

• sin (A) = opp/adj

What is the cosine ratio?

• cos (A) = opp/hyp

• cos (A) = adj/hyp

• cos (A) = opp/adj

What is the tangent ratio?

• tan (A) = opp/hyp

• tan (A) = adj/hyp

• tan (A) = opp/adj

What is the length of the hypotenuse of this triangle?

• 21

• 28

• 35

What is the length of the leg opposite angle A?

• 21

• 28

• 35

What is the length of the leg adjacent to angle A?

• 21

• 28

• 35

What is the ratio of the sine of angle A?

Sin (A) =

• 21/35

• 28/35

• 28/21

What is the ratio of the cosine of angle A?

Cos (A) =

• 21/35

• 28/35

• 28/21

What is the ratio of the cosine of angle A?

Cos (A) =

• 3/5

• 4/5

• 3/4

What is the ratio of the tangent of angle A?

Tan (A) =

• 3/5

• 4/5

• 3/4