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1.What is the value of sinθ given that (3, −7) is a point on the terminal side of θ ?   A. −(3√58/58) B. 7√58/58 C. −(7√58/58) D.3√58/58

 

2.The line with equation x + y = 0 coincides with the terminal side of an angle θ in standard position in Quadrant  II .

What is the value of tanθ ?

Enter your answer in the box.

 

3.What is the reference angle for the angle with measure −(π/4) ?

 

A.π

B.7π/4

C.−(7π/4)

D.π/4

 May 31, 2018
edited by Guest  May 31, 2018
 #1
avatar+20309 
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1

x=3 y=-7   Hypotenuse = sqrt((-7)^2 +3^2)= sqrt(58) 7.616

 

sin =  -7/sqrt58    =-7sqrt58/58

 

2

In quadrant II    x is negative   and y is positive       they are equal magnitude because  x+y = 0

 

tan = sin/cos    =  -1

 

3

reference angle is terminal side referenced to x- axis   so  pi/4

 May 31, 2018
 #2
avatar+107534 
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This is a reapeat question. Now ity has been answered twice.

One question per post thanks and not multiple questions posted in the same time frame.

 Jun 1, 2018

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