Show:
Degrees/Radians
Reference Angles
Evaluating Trig Functions
Inverse Trig Functions
Miscellaneous
100
Convert 3pi/2 to degrees
270 degrees
100
What is the reference angle for 5pi/3?
pi/3
100
sin (120 degrees)
1/2
100
sin^-1 (1/2)
30 degrees
100
A 15 foot ladder leans against a wall and its base is 9 feet away from the wall. How high up on the wall will the ladder reach?
12 feet
200
Convert 60 degrees to radians
pi/3
200
What is the reference angle for 215 degrees?
35 degrees
200
cos (210 degrees)
- square root (3) / 2
200
cos^-1 (-1)
180 degrees
200
What quadrant is the terminal side of an angle of 532 degrees in?
second
300
Convert 7pi/4 into degrees
315 degrees
300
What is the reference angle for 115 degrees?
65 degrees
300
tan (-4pi/3)
- square root (3)
300
tan^-1 (-1)
-45
300
What is the reference angle of an angle that is -412 degrees?
52 degrees
400
Convert 14pi/3 into degrees
840 degrees
400
What is the reference angle for 430 degrees?
70 degrees
400
cos (3pi)
-1
400
cos^-1 (0)
90 degrees
400
A right triangle has one angle that measures 65 degrees. The hypotenuse is 15. What are the lengths of the other two sides?
13.6 and 6.3
500
Convert 1080 degrees to radians
6pi
500
What is the reference angle for -525 degrees
15 degrees
500
tan (990 degrees)
undefined
500
cos^-1 (-square root (2)/2)
135 degrees
500
Give an exact answer: cos (sin^-1 (-1/2))
square root(3) / 2