Exploring Sin, Cos, and Tan in Trigonometry

What does the mnemonic SOH-CAH-TOA help to remember?

• The formulas for sine, cosine, and tangent

• The laws of exponents

• The properties of right triangles

• The names of trigonometric functions

Which side of the triangle is directly opposite the right angle?

• Adjacent

• None of the above

• Hypotenuse

• Opposite

Which side is adjacent to theta?

• The longest side

• The side opposite the right angle

• The side opposite to theta

• The side next to theta but not the hypotenuse

If the opposite side is 4 and the hypotenuse is 5, what is the sine of theta?

• 5/4

• 1/5

• 3/5

• 4/5

What is the correct expression for cosine of theta?

• Hypotenuse over adjacent

• Adjacent over hypotenuse

• Adjacent over opposite

• Opposite over hypotenuse

How do you calculate the tangent of theta?

• Adjacent over hypotenuse

• Opposite over adjacent

• Hypotenuse over opposite

• Adjacent over opposite

What is the tangent of theta if the opposite side is 4 and the adjacent side is 3?

• 3/4

• 4/3

• 3/5

• 5/3

What is the cosecant of theta if the sine of theta is 4/5?

• 4/5

• 5/4

• 1/5

• 3/5

How is secant of theta calculated if cosine of theta is known?

• 1 over cosine of theta

• Cosine of theta over 1

• 1 over sine of theta

• Sine of theta over 1

What should you always include when writing the answer for a trigonometric function?

• The length of the hypotenuse

• The value of pi

• The specific angle used

• The degree of the angle