Answer:
19
Step-by-step explanation:
<u>Step 1: Solve</u>
13 - (-6)
13 + 6
<em>19</em>
<em />
Answer: 19
Answer:
20/29
Step-by-step explanation:
sin θ = 21/29
Use Pythagorean identity:
sin² θ + cos² θ = 1
(21/29)² + cos² θ = 1
441/841 + cos² θ = 1
cos² θ = 400/841
cos θ = ±20/29
Since 0° < θ < 90°, cos θ > 0. So cos θ = 20/29.
Answer:
3
Step-by-step explanation:
X goes first