Using the sine function to find the missing length of the hypotenuse

The video tutorial introduces trigonometry, focusing on identifying triangle sides relative to angles. It explains the trigonometric functions sine, cosine, and tangent, and demonstrates solving problems using these functions. The tutorial includes algebraic manipulation to solve for unknowns and emphasizes the importance of using a calculator in degree mode for accurate results.

What is the side called that is opposite to the angle in a right triangle?

• Opposite

• Hypotenuse

• Base

• Adjacent

Which trigonometric function is defined as the ratio of the opposite side to the hypotenuse?

• Secant

• Tangent

• Sine

• Cosine

If you have the opposite side and hypotenuse, which trigonometric function should you use?

• Cosine

• Sine

• Tangent

• Cotangent

In the equation sin(63°) = 12 / X, what is the value of X?

• 12.5

• 13.47

• 15.3

• 10.5

What should you ensure about your calculator when solving trigonometric problems involving degrees?

• It is in Scientific mode

• It is in Standard mode

• It is in Degree mode

• It is in Radian mode