Geometry Warm-Up2/7/12 Find the sine, cosine, and tangent of  A &  B.

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Presentation transcript:

Geometry Warm-Up2/7/12 Find the sine, cosine, and tangent of  A &  B.

8-4: Trigonometry Geometry February 7, 2012

TRIGONOMETRY SIN = OPP/HYP COS = ADJ/HYP TAN = OPP/ADJ SOH CAH TOA

Example 1: A fitness trainer sets the incline on a treadmill to 7°. The walking surface is 5 feet long. Approximately how many inches did the trainer raise the end of the treadmill from the floor?

“Gettin’ Triggy With It”

Example 2: The bottom of a handicap ramp is 15 feet from the entrance of a building. If the angle of the ramp is about 4.8°, how high does the ramp rise off the ground to the nearest inch?

Example 3: What is the value of x to the nearest tenth degree?

Example 4: Find m  B to the nearest tenth of a degree if cos B = and  B is an acute angle.