Solving Missing Sides of Triangle Using Trig Functions

Set up an equation that could be used to solve for the variable.

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Find the length of side AC.

• 25.4

• 24.7

• 29.2

• 28.3

Using the information given, solve for side a.

• 8.2

• 2.8

• 1.1

• 1.0

Use inverse trig ratios (SOH CAH TOA) to solve for the missing angle

• 49°

• 57°

• 45°

• 54°

Solve the right triangle.

• <B = 39^o, AB = 11.58, AC = 7.29

• <B = 39^o, AB = 7.29, AC = 11.58

• <B = 129^o, AB = 11.58, AC = 7.29

• <B = 129^o, AB = 7.29, AC = 11.58

Using Law of Cosines, find side length 'p' (QR).

• 34.7 km

• 2.2 km

• 13.74 km

• 31.1 km

Set up the problem using basic trig functions.

Susan is flying a kite, which gets caught in the top of a tree.  Use the diagram and basic trig functions to estimate the height of the tree.

• 63 ft

• 65 ft

• 74 ft

• 87 ft

Using Law of Sines, find side length 'a' (BC).

• 4 km

• 10 km

• 8 km

• 15 km

Using Law of Sines, find the measure of angle A?

• 50 degrees

• 60 degrees

• 78 degrees

• 74 degrees