Angles are their own object type. An angle is entered by prefixing a number with the angle symbol (∡, AL-RS-6), followed by a number, then finally a suffix that indicates the system (° = degrees, r = radians, g = grads, or d = DMS [Degrees Minutes Seconds] = DDD.MMSS)¹⁾. For example, the following all indicate an angle of 90.5 degrees:

∡90.5°

∡1.5795.r

∡100.5556g

90.3000d

Trigonometric functions operate on angle objects as expected:

∡45° SIN yields the real number result 0.7071.

Basic arithmetic operations can also be applied to angle objects:

∡90° ∡50° + yields ∡135°

∡90° ∡50° - yields ∡40°

∡90° ∡45° * yields 4050

∡90° ∡45° / yields 2