Finding Missing Angles with Trigonometry

Miss Weiss teaches how to use trigonometry to find missing angles in right triangles. The lesson covers labeling triangles, using SOHCAHTOA to write trig ratios, and solving real-world problems. The process involves drawing diagrams, choosing appropriate trig functions, and using inverse functions to find angles. Examples include solving for angles in triangles QRS and IJK, and a real-world ladder problem.

What is the primary focus of today's lesson?

• Graphing linear functions

• Finding missing angles of right triangles

• Solving quadratic equations

• Finding missing sides of right triangles

Tags

CCSS.HSG.SRT.C.8

Which trigonometric functions will be used to find missing angles?

• Linear, Quadratic, and Cubic

• Logarithm, Exponential, and Polynomial

• Secant, Cosecant, and Cotangent

• Sine, Cosine, and Tangent

Tags

CCSS.HSG.SRT.C.6

What is the first step in the checklist for solving missing angles?

• Use inverse functions

• Set up an equation

• Draw and label the diagram

• Choose the appropriate trig function

Tags

CCSS.HSG.SRT.C.8

What is the inverse function of cosine called?

• Tangent inverse

• Cosine inverse

• Secant inverse

• Sine inverse

Tags

CCSS.HSF.TF.B.7

In the example problem, what is the value of the hypotenuse?

• 52.7

• 82

• 43

• 60

Tags

CCSS.8.G.B.7

Which trigonometric function is used when given the adjacent and hypotenuse?

• Tangent

• Cosine

• Sine

• Secant

Tags

CCSS.HSG.SRT.C.6

In the second example, what is the value of the opposite side?

• 63

• 82

• 52.7

• 48

Tags

CCSS.8.G.B.7

Which trigonometric function is used when given the opposite and adjacent sides?

• Sine

• Cosine

• Tangent

• Cosecant

Tags

CCSS.HSG.SRT.C.6

In the real-world example, what is the length of the ladder?

• 82 feet

• 10 feet

• 12 feet

• 56 degrees

Tags

CCSS.HSG.SRT.C.8

Which trigonometric function is used to find the angle between the ladder and the ground?

• Cosine

• Sine

• Cosecant

• Tangent

Tags

CCSS.HSG.SRT.C.6