Solving for Missing Angles in Right Triangles

The video tutorial explains how to solve for angles in right triangles using trigonometric functions, specifically focusing on the tangent function and its inverse. It demonstrates the use of a calculator to find angles and introduces a shortcut method for solving angles. The tutorial also distinguishes between solving for sides and angles, emphasizing the use of regular trig for sides and inverse trig for angles.

What trigonometric function is used when the opposite side and adjacent side are known?

• Cotangent

• Tangent

• Cosine

• Sine

Tags

CCSS.HSG.SRT.C.6

What is the result of applying the inverse tangent function to the ratio 5/12?

• Theta equals 45 degrees

• Theta equals 22.62 degrees

• Theta equals 5 degrees

• Theta equals 12 degrees

Tags

CCSS.HSG.SRT.C.8

Which function undoes the tangent function?

• Cosine

• Sine

• Secant

• Inverse tangent

Tags

CCSS.HSF.TF.B.7

What is the correct way to input the ratio 5/12 into a TI-84 Plus calculator to find an angle?

• Second + Cotangent

• Second + Tangent

• Second + Sine

• Second + Cosine

Tags

CCSS.HSG.SRT.C.8

What angle is found when using the inverse tangent of 5/12?

• 22.62 degrees

• 30 degrees

• 45 degrees

• 60 degrees

Tags

CCSS.HSG.SRT.C.8

Which sides are used in the cosine function?

• Opposite and Hypotenuse

• Adjacent and Hypotenuse

• All sides

• Opposite and Adjacent

Tags

CCSS.HSG.SRT.C.6

What is the result of cosine inverse of 7/16?

• 64.06 degrees

• 45 degrees

• 30 degrees

• 90 degrees

Tags

CCSS.HSG.SRT.C.8

What should you do if you forget to close off parentheses on a calculator?

• The calculator will error

• None of the above

• It might still work

• Restart the calculation

When solving for angles, which type of trigonometric function is used?

• None of the above

• Both A and B

• Regular trigonometric functions

• Inverse trigonometric functions

Tags

CCSS.HSG.SRT.C.8

What is a practical tip for remembering when to use inverse trigonometric functions?

• Use them when solving for sides

• Use them when solving for angles

• Use them only with a calculator

• Use them for both sides and angles

Tags

CCSS.HSG.SRT.C.8