Finding Missing Angles in Right Triangles

This video tutorial explains how to use the SOHCAHTOA method to find missing angles in right-angled triangles. It covers the use of tangent and cosine functions, demonstrating how to label triangle sides and apply inverse trigonometric functions to solve for angles. The video includes examples and encourages viewers to practice the concepts.

What does SOHCAHTOA stand for?

• Sine, Cosine, Angle

• Sine, Opposite, Hypotenuse

• Sine, Opposite, Angle

• Sine, Cosine, Tangent

Which sides do you label when using SOHCAHTOA?

• Hypotenuse, Angle, Opposite

• Adjacent, Opposite, Angle

• Adjacent, Angle, Opposite

• Hypotenuse, Adjacent, Opposite

When should you use the tangent function?

• When you have the hypotenuse and opposite sides

• When you have the opposite and adjacent sides

• When you have two angles

• When you have the hypotenuse and adjacent sides

How do you isolate the angle when using tangent?

• Divide by tan

• Subtract tan

• Use inverse tan

• Multiply by tan

What is the result of using inverse tan(10/11.9)?

• 30 degrees

• 40 degrees

• 17.5 degrees

• 70.5 degrees

What does inverse tan do in the context of finding angles?

• It multiplies the angle by tan

• It subtracts the angle from tan

• It divides the angle by tan

• It finds the angle given the ratio of opposite to adjacent

Which function do you use when you have the adjacent side and hypotenuse?

• Inverse Sine

• Tangent

• Cosine

• Sine

What is the result of using inverse cos(1/3)?

• 60 degrees

• 70.5 degrees

• 45 degrees

• 30 degrees

What is the importance of labeling sides in SOHCAHTOA?

• To calculate the area of the triangle

• To identify the correct angles

• To choose the correct trigonometric function

• To determine the perimeter of the triangle

Why is it necessary to use inverse functions in trigonometry?

• To simplify the trigonometric expressions

• To calculate the sides of a triangle

• To find the hypotenuse only

• To find the angles given the sides