Question

If the measure of angle is 0 is7x/4, which statements are true?

Answer 1

See below

Explanation:

As the other answerer posted : the reference angle is 45 °

ALSO tan = -1 and sin = - sqrt(2) / 2

Answer 2

a) The measure of the reference angle is 45°

Explanation:

Reference angle:

`\sf (7\pi )/(4) \ is \ in \ the \ fourth \ quadrant.\\\\ \text{Reference angle = 2$\pi - \theta$}\\`

`\sf =2\pi -(7\pi )/(4)\\\\ =(8\pi )/(4)-(7\pi )/(4)\\\\= (\pi )/(4)\\\\=(180)/(4)\\\\`

= 45°