If If sinx=13 find cosx. Hint: use the pythagorian identity.

13

19

22√3

89

[2√2]/3

Step-by-step explanation:

cos²x = 1 - sin²x

cos²x = 1 - (⅓)² = 8/9

cos x = sqrt(8/9)

= [2√2]/3

Hello! The answer to your question is: Draw out a horizontal line. Place 0 at the center. Then place evenly spaced tick marks on either side of 0. Label the right side of tick marks as 1, 2, 3, moving from 0 and going to the right

Label the left side of tick marks -1, -2, -3, starting at 0 and moving left

The location -3 on the number line is exactly 3 units away from 0. We start at 0 and move to -3 by moving 3 spots to the left; or we start at -3 and move 3 units to the right to get to 0.

Therefore, the absolute value of -3 is 3

Absolute value on a number line is the distance a number is from 0

The distance is never negative.

Hope this helped!