Find the exact value of cos (theta) for an angle (theta) with sin (theta) = 3/8 and with its terminal side in Quadrant I.

a. 5/8

b. - sqrt(55)/8

c. 8/3

d. sqrt(55)/8

Step-by-step explanation:

is given.

We are also given that 's angle terminates in quadrant one which means all 6 trig ratios are positive there.

We will use Pythagorean Identity: .

.

d

Step-by-step explanation:

Cos²theta = 1 - sin²theta

= 1 - (3/8)² = 55/64

Cos theta = sqrt(55)/8

Positive because Quadrant 1

not enough information

step-by-step explanation:

we cannot know this, because the other students could have handed out 10 flyers, or they could have handed out 100. one way, the mean would go up, and another way, the mean would go down.