If you have a calculator, you can use the inverse cos " cos⁻¹ " key. Many upper level books write that as Arccos so as not to confuse you with a negative exponent. We do that because if you take the cosine of any angle, and then the inverse cosine of any angle, it leads you back to the original angle. Think of it as a big "UNDO" button.
To one decimal place, that result is 61.6 degrees.
(86.8 - 3n)/4
You can get this by combining the two. Make sure to give common denominators.
20:36 simplifies to 10:18 then to 5:6
Answer:
2838283
Step-by-step explanation:
BiG bRaIn
just carry the one and you'll be good
Answer:11/15
Step-by-step explanation:
Most common denominator is 15 multiply 2/5 by 3 and 1/3 by 5 and that’s what you get
