Find cos if sin = -2/3 and falls in quadrant 3. a. cos = 5 squared/3 b. non of these c. cos= (2)5 squared/5 d. cos = - 5 squared/3 c. cos = - (2)5 squared/5

a. .

Step-by-step explanation:

Given sin x= -2/3.

Squaring both sides, we get

.

We know,

Plugging the value of

Taking square root on both sides, we get

.

Note: In 3rd qadrant cos is positive.

Therefore, .

Step-by-step explanation:

We are given sin = -2/3  which falls in the 3rd quadrant and we are to find the value of cos with the help of this given information.

We know that, . therefore we will square the given value of sin:

Now substituting this value of in the above mentioned formula to get:

Taking square root on both the sides to get:

Therefore, since it is positive in the 3rd quadrant.

answer: i believe its b. if you sound out the sentences that sounds wrong.

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.