The answer is C. i know because i looked it up
Answer:
a
Step-by-step explanation:
everything else there are gaps in between like b and in c they are overlapping
Answer: x=75
Explanation:
x+10+x+20=180
combine like terms
2x+30=180
subtract 30 from each side
2x=150
divide each side by 2
x=75
Pythagorean theorem is
and using that sin is opposite/hypotenuse, you can find the third side of the triangle.
now you know adjacent is 60, so cos=60/61