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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
Warm up

  • 1. Sin 50o =

  • 2. If tan (x) = 1 solve for x.


Lesson 9 nice triangles

Lesson 9 Nice Triangles

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


Special angles
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
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