Trigonometric Functions and Angles

The video tutorial covers trigonometry ratios, specifically sine, cosine, and tangent, and their application in solving right triangles. It introduces the mnemonic SOHCAHTOA to remember these ratios and provides practical examples of using them to find missing sides and angles. The tutorial also includes instructions on using calculators to determine angles and concludes with a comprehensive example of finding a missing side using trigonometry.

What is the main purpose of combining screencasts in this video?

• To focus on a single topic

• To include more examples

• To break the timing up a bit

• To make the video longer

What are trigonometry ratios used for?

• Determining the volume of cubes

• Calculating areas of circles

• Finding missing pieces of right triangles

• Solving algebraic equations

Which buttons on a calculator are used for trigonometry ratios?

• Add, Subtract, Multiply

• Sine, Cosine, Tangent

• Square, Cube, Root

• Log, Exp, Mod

What does the 'S' in SOH-CAH-TOA stand for?

• Secant

• Square

• Sum

• Sine

In the mnemonic SOH-CAH-TOA, what does 'CAH' represent?

• Cosine equals hypotenuse over adjacent

• Cosine equals adjacent over opposite

• Cosine equals opposite over hypotenuse

• Cosine equals adjacent over hypotenuse

What is the sine of angle A in the triangle with sides 8, 15, and 17?

• 15/17

• 8/17

• 17/15

• 8/15

Which side is opposite angle A in the triangle with sides 8, 15, and 17?

• 8

• None of these

• 15

• 17

What is the cosine of angle B in the triangle with sides 8, 15, and 17?

• 8/17

• 15/17

• 8/15

• 17/15

What is the tangent of angle B in the triangle with sides 8, 15, and 17?

• 17/15

• 8/15

• 15/17

• 8/17

How do you find angle A using a calculator?

• Divide 15 by 17 and use the sine inverse function

• Multiply 15 by 17 and use the cosine function

• Add 15 and 17 and use the tangent function

• Subtract 15 from 17 and use the sine function