Trigonometric Ratios and Angles

The video tutorial explains how to find angle measurements using trigonometric ratios, specifically focusing on cosine and sine functions. It demonstrates the process of setting up trigonometric ratios and applying inverse functions to solve for unknown angles. The tutorial includes multiple examples to illustrate the concepts, emphasizing the use of calculators for precise calculations.

What is the first step in finding an angle using trigonometric ratios?

• Apply the inverse function directly

• Set up the trigonometric ratio

• Use a calculator to find the angle

• Guess the angle

Which trigonometric ratio is used when the adjacent side and hypotenuse are known?

• Tangent

• Cosine

• Secant

• Sine

How do you isolate the angle when using the cosine ratio?

• Multiply both sides by the hypotenuse

• Add the adjacent side to the hypotenuse

• Use the inverse cosine function

• Subtract the adjacent side from the hypotenuse

What is the approximate angle when the cosine of the angle is 13/20?

• 49 degrees

• 41 degrees

• 30 degrees

• 53 degrees

When using the sine ratio, which sides are involved?

• Adjacent and hypotenuse

• Opposite and hypotenuse

• Opposite and adjacent

• Adjacent and opposite

What is the angle when the sine of the angle is 12/24?

• 45 degrees

• 60 degrees

• 30 degrees

• 90 degrees

Which function is used to find an angle when the sine ratio is known?

• Inverse sine

• Inverse secant

• Inverse cosine

• Inverse tangent

What is the approximate angle when the cosine of the angle is 6/8?

• 30 degrees

• 41 degrees

• 49 degrees

• 53 degrees

In the cosine ratio, what does the denominator represent?

• Opposite side

• Angle

• Hypotenuse

• Adjacent side

What is the angle when the sine of the angle is 68/85?

• 53 degrees

• 49 degrees

• 41 degrees

• 30 degrees