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Jon wanted to solve this problem, given that sin 0=1/4, what is the value of cos 0

 

What did he do wrong?

 

 May 21, 2021
 #1
avatar+121055 
+1

Strp B  is  incorrect

 

sin^2  theta    =   (1/4)^2  =  1/16

 

You should  have

 

 

1/ 16  + cos^2 theta  =  1

 

cos^2 theta  = 1  - 1/16

 

cos^2 theta  =   15/16

 

cos  theta  =   sqrt (15)  /  4

 

 

cool cool cool

 May 21, 2021

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