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The terminal side of θ passes through the point (7, −1) . What is the exact value of sinθ in simplified form?

 Jul 9, 2019
 #1
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(7, - 1)   =  (x, y)

 

sin θ   = y / r

 

We need to   find  r   =  √ [x^2 + y^2 ]  = √ [ (7)^2 + (-1)^2 ]  = √ 50

 

So....

 

sin θ   =  -  1  / √ 50  =    - √ 50 / 50

 

 

 

cool cool cool

 Jul 9, 2019

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