Answer:
i believe the correct answer is x+90+63=180
Step-by-step explanation:
Answer:
cos(55) = 11/x
Step-by-step explanation:
We have the hypotenuse (x) and an angle adjacent to 55 (11). The only trigonometric formula that uses adjacent and hypotenuse is cosine (adjacent/hypotenuse), so that will be your answer.
Answer:
I'm not so sure about this one so sorry if this is wrong
Step-by-step explanation:
Answer:associative property of addition
Step-by-step explanation:The associative property of addition says that changing the grouping of the addends does not change the sum.