Answer:
Step-by-step explanation:
By definition the cosine of an angle is the quotient between the side adjacent to the angle and the hypotenuse.
In other words:
In this triangle the length of the side adjacent to the 55 degree angle is x, and the length of the hypotenuse is 20
So:
Now we solve the equation to find the value of x
Finally
Answer:
Step-by-step explanation:
I think the answer is C.
I hope this is correct! Sorry if it’s not but that’s what I would put
3n+14=-4
subtract 14 from both sides.
3n=-18
divide 3 to both sides
n=-6