Like I said in the other answer, you take the rise divided by the run, which would give you -1/2.
Recall the half-angle identity:
So in order to find
, we only need to know the value of
. But there are two possible values. To decide which to take, we use the given information: we know that
lies in quadrant III, which means
, so
, which places
in quadrant II. In this quadrant, the sine of angle is positive, and so
is an angle of a ray whose terminal point,
lies on the circle
. The
-coordinate is all we need to know in order to find that
. So,
The answer is D to your answer. Have a wonderful Day. Brainly.
I will not give you the answer but I will show you how to solve this.
55*.6= A
65*.6=B
75*.6=C
85*.6 = D
Do you see the trend? Continue until ten equations are formed and add all of the totals. A+B+D+C...=Total
