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

Guest May 31, 2018

edited by
Guest
May 31, 2018

#1**+1 **

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

ElectricPavlov
May 31, 2018