Answer:
you just post the question and people answer
Step-by-step explanation:

so... notice the picture below, the angle in the fourth quadrant
now... notice, the cosine is just the distance the angle makes with the x-axis
so... using the pythagorean theorem, get the opposite side, from that triangle, keeping in mind that, "y" is negative in the 4th quadrant
once you get "y", get any other trigonometry value you need :)
Answer:
C
Step-by-step explanation:
congruence means duplicate so you have to see its reflection