Trigonometric Functions and Their Reciprocals

The video tutorial explains the trigonometric ratios sine, cosine, and tangent, and introduces their reciprocal functions: secant, cosecant, and cotangent. It discusses how these functions relate to the sides of a right triangle and provides mnemonic devices to help remember them. The tutorial also covers how to calculate these functions using a calculator, emphasizing the reciprocal nature of secant, cosecant, and cotangent.

What is the sine of an angle in a right triangle defined as?

• Adjacent side divided by opposite side

• Adjacent side divided by hypotenuse

• Opposite side divided by hypotenuse

• Opposite side divided by adjacent side

Which trigonometric function is defined as the adjacent side divided by the hypotenuse?

• Sine

• Cosecant

• Cosine

• Tangent

What is the abbreviation for tangent?

• tan

• sin

• cos

• cot

How many different ways can the sides of a right triangle be combined into fractions?

• Three

• Four

• Five

• Six

What is the reciprocal of sine called?

• Cotangent

• Cosecant

• Cosine

• Secant

Which function is the reciprocal of cosine?

• Cosecant

• Sine

• Secant

• Cotangent

What is the abbreviation for cosecant?

• csc

• sec

• cot

• cos

Which mnemonic can help remember sine, cosine, and tangent?

• SAC TOA

• CHOSA CA

• SOA TOA

• SOH CAH TOA

What is the abbreviation for secant?

• sec

• sin

• cot

• csc

Which mnemonic helps remember cosecant, secant, and cotangent?

• SAC TOA

• CHOSA CA

• SOA TOA

• SOH CAH TOA