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Program: DEG2RAD
DEG2RAD
- Changes an angle measure from degrees to radians or from radians to degrees.
- Finds coterminal angles.
- Finds reference angles.
Useful for:
- ACT
- Algebra 1
- Trigonometry
- Precalculus
- Calculus
Try this problem using DEG2RAD: 1
Example 3
Q: Find the following for 18π/5:
a. the smallest positive coterminal angle.
b. the reference angle.
Solution: Run DEG2RAD. How?
Choose '3' for
coterminal and
reference angles.
Choose '2' to enter
the angle as a
radian measure.
Enter 18π/5 for
the angle.
The program reports
these answers in
degrees only:
Run the program again, choosing '1' to change these degree measures into radians.
Interpretation: A coterminal angle (but not the only one) is 288° or 8π/5. The reference angle is 72° or 2π/5. (Use menu item 1 to change the angles from degrees to radians.)
See Example 1
See Example 2
