Warm up

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Warm up - PowerPoint PPT Presentation

Warm up. 1. Sin 50 o = 2. If tan (x) = 1 solve for x. Lesson 9 Nice Triangles. Objective: To learn the sin, cos , and tan functions for the two special triangles . Special Angles. 45 o. 60 o. √2. 1. 2. 1. 45 o. 30 o. 1. √3.

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Presentation Transcript
Warm up
• 1. Sin 50o =
• 2. If tan (x) = 1 solve for x.

Lesson 9 Nice Triangles

Objective: To learn the sin, cos, and tan functions for the two special triangles

Special Angles

45o

60o

√2

1

2

1

45o

30o

1

√3

Special Right Triangles are 30-60-90 and 45-45-90

Other useful info
• Converting radians to degrees on a Calculator
• Ex: Convert to degrees:
• MODE: degrees
• [2nd][angle][3][enter]
• It also can be done the other way with MODE set to radians, but it gives the answer in a decimal form instead of in terms of pi.

3 is r