Answer:
It returns the angle whose cosine is a given number.
Step-by-step explanation:
For every trigonometry function, there is an inverse function that works in reverse. These inverse functions have the same name but with 'arc' in front. (On some calculators the arccos button may be labeled arccos, or sometimes cos-1.) So the inverse of cos is arccos etc. When we see "arccos x", we understand it as "the angle whose cosine is x"
cos30 = 0.866 Means: The cosine of 30 degrees is 0.866
arccos 0.866 = 30 Means: The angle whose cosine is 0.866 is 30 degrees.
Use arccos when you know the cosine of an angle and want to know the actual angle.
Answer:
Use the given functions to set up and simplify O
.
P=(−8,3)=(−8=3=)Q=(−8=3=)(2,7)=(2=7=)P=(2=7=)O=(2=7=)
Step-by-step explanation:
It's 60 minutes because 450÷10 is 45 so he has to bike for 45 minutes and a 15 minute break would make it 60 minutes
Answer (Please vote me Brainliest if this helps!):
The solution is B.
Step-by-step explanation:
Solve with the quadratic formula
Simplify
Separate the solutions
Apply rule - (-a) = a
Multiply the numbers: 2 · 1 = 2
Apply rule - (-a) = a
Multiply the numbers: 2 · 1 = 2
The solutions to the quadratic equations are:
,
Answer:
-754.13
Step-by-step explanation:
Calculator