+0  
 
0
29
2
avatar+222 

θ lies in Quandrant I

 

cos θ = 5/6

 

What is the exact value of sin θ in simplified form?

 

A.  -√11/6

 

B. √11/5

 

C. √11/6

 

D. - 5√11 / 11

whosmans  Nov 27, 2018
 #1
avatar+14556 
+2

In quadrant 1     sin and cos are both POSITIVE

 

cos^2 + sin^2 = 1

(5/6)^2 + sin^2 = 1

sin^2 = 1- 25/36

sin^2 = 11/36

sin = sqrt(11) / 6     (the positive sq rt of   11/36)

ElectricPavlov  Nov 27, 2018
 #2
avatar+222 
+1

So C ??

whosmans  Nov 27, 2018

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