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

there is nothing below so i cannot

step-by-step explanation:

16 is the absolute value

step-by-step explanation: