1. Acute Angle: An angle that measures between 0° and 90°. 2. Right Angle: A specific angle with a measure of exactly 90°. 3. Obtuse Angle: An angle measuring between 90° and 180°. 4. Straight Angle: ...

2. Calculate the period (T) of the waveforms: The period is the time it takes to complete a cycle. 3. Compute the fraction of the waveform’s period corresponding to the time-shift: Fraction = Δt/T. 4.

To calculate angle c, you divide 360º by the number of equal angles. There are six equal acute angles, so you divide 360º by 6. You can use your division tables to help you.