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Help #48,49

 May 7, 2018
 #1
avatar+101228 
+1

48.....We can use the tangent inverse to find this

 

atan (5.67)  =  79.997°  ≈   80°

 

 

49.

 

sin^2  θ                 1   - cos^2  θ            ( 1 - cos  θ) ( 1 + cos  θ)                   1  +  cos  θ

_________   =      __________    =      ____________________   =  

1  - cos  θ               1  - cos  θ                (1  -  cos  θ)

 

 

 

cool cool cool

 May 7, 2018

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