Act Math Trigonometry

What is the Pythagorean Identity?

• sin(theta) + cos(theta) = 1

• tan^2(theta) + sec^2(theta) = 1

• sin^2(theta) + cos^2(theta) = 1

• sin^2(theta) - cos^2(theta) = 1

Tags

CCSS.HSF.TF.C.8

What is the sine function in trigonometry?

• The sine function in trigonometry is sin(theta) = opposite / hypotenuse.

• The sine function is cos(theta) = adjacent / hypotenuse.

• The sine function is tan(theta) = opposite / adjacent.

• The sine function is sec(theta) = hypotenuse / adjacent.

Tags

CCSS.HSG.SRT.C.6

What is the cosine function in trigonometry?

• The cosine function is defined as sin(theta) / cos(theta).

• The cosine function in trigonometry is defined as cos(theta) = adjacent / hypotenuse.

• The cosine function is equal to the tangent of an angle.

• The cosine function is only applicable to right-angled triangles.

Tags

CCSS.HSG.SRT.C.6

What is the tangent function in trigonometry?

• The tangent function is equal to the hypotenuse

• The tangent function is only applicable to acute angles

• The tangent function in trigonometry is tan(theta) = opposite/adjacent.

• The tangent function is sin(theta)/cos(theta)

Tags

CCSS.HSG.SRT.C.6

If sin(theta) = 3/5, what is cos(theta)?

• 5/3

• 2/5

• 1/5

• 4/5

Tags

CCSS.HSF.TF.C.8

If cos(theta) = 4/5, what is sin(theta)?

• 1/2

• 3/5

• 2/5

• 5/4

Tags

CCSS.HSF.TF.C.8

If tan(theta) = 5/12, what is cos(theta)?

• 12/13

• 5/12

• 5/13

• 12/5

Tags

CCSS.HSG.SRT.C.7

If sin(theta) = 1/2, what is tan(theta)?

• 0

• -sqrt(3)/3

• 1

• sqrt(3)/3

Tags

CCSS.HSF.TF.C.8

If cos(theta) = 3/5, what is sin(theta)?

• 4/5

• 2/5

• 5/3

• 1/5

Tags

CCSS.HSF.TF.C.8

If tan(theta) = 24/7, what is sin(theta)?

• 24/7

• 7/24

• 24/25

• 25/24

Tags

CCSS.HSF.TF.C.8