How do you evaluate #arccos(1/2)# without a calculator?
How do you evaluate #arccos(1/2)# without a calculator? Risposta: #60^@# Spiegazione: #arccos(1/2)# means give me the angle that gives a #cos(1/2)#. If you look at a trig circle in the first quadrant, the angle with a #cos(1/2)# is #60^@#. This is found in the first quadrant because of the restricted domain and range of the … Leggi tutto