Question

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

Answer 1

Answer:

a) The measure of the reference angle is 45°

Step-by-step explanation:

Reference angle:

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

                             $\sf =2\pi -\dfrac{7\pi }{4}\\\\ =\dfrac{8\pi }{4}-\dfrac{7\pi }{4}\\\\= \dfrac{\pi }{4}\\\\=\dfrac{180}{4}$

                             = 45°

Answer 2

Answer:

See below

Step-by-step explanation:

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

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