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OSU - Class Notes - Week 2

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5.2 Trigonometry of Right Triangles

Sunday, January 20, 2019

11:37 AM

opposite

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Sin e sopposite/hypotenuse Cose=adjacent/hypotenuse Tan O=opposite/adjacent Sec =1/Cose Csc =1/Sino Cot O=1/Tan Tan9=Sin/Cose

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S

adjacent

hypotenuse

Example. 1

A 40ft latter is leaning against a building. If the base of the latter is 6ft from the base of the building, then what is the angles formed by the latter and the building? We also discuss several other topics like What are values in psychology?

Don't forget about the age old question of What is it called when you just believe in god?

Sino =

40

0 = sin(40) If you want to learn more check out What are examples of ethnocentrism?

When calc, is in radian When calc. is in degree

40

Cos

Tan

Degree Radian Sin

=30 T76 z Ø 45 T/4 2/2 8 60 TY3 3/2 We also discuss several other topics like How was the plymouth colony governed?

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=90 172 =0 0 0

√2/2 /

3

Example 2

Given the right triangle, calculate the 6 trigonometric functions.

*SOH-CAH-TOA* Sin e=/h = 5/13 Cose= a/h = 12/13 Tan = o/a = 5/12 CSC @ = 1/Sino = 13/5 Sec 0 = 1/cose= 13/12 Cot O = 1/Tane= 12/5

a+b=C? 5+2 = x 25+144 = x 169=x? 13 = X