+0  
 
0
241
1
avatar+445 

The terminal side of θ pases through points (8, -7)

 

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

 

a. 8√113 / 113

 

b. - 7√113 / 113

 

c. 7√113 / 113

 

d. - 8√113 / 113

 Nov 27, 2018

Best Answer 

 #1
avatar+20239 
0

Hypotenuse of the angle  = sqrt (8^2 + (-7)^2) = sqrt(113)

    sin is opp/hyp = -7/sqrt113

    cos = adj/hyp = 8/sqrt(113)    multiply numerator and denom by sqrt(113) to get    8 * sqrt(113) / 113

 Nov 27, 2018
 #1
avatar+20239 
0
Best Answer

Hypotenuse of the angle  = sqrt (8^2 + (-7)^2) = sqrt(113)

    sin is opp/hyp = -7/sqrt113

    cos = adj/hyp = 8/sqrt(113)    multiply numerator and denom by sqrt(113) to get    8 * sqrt(113) / 113

ElectricPavlov Nov 27, 2018

25 Online Users

avatar
avatar