Write each function in terms of its cofunction. WARM-UP (a)cos 48°= sin (90° – 48°) = sin 42° (b)tan 67°= cot (90° – 67°) = cot 23° (c)sec 44°= csc (90°
Copyright © 2009 Pearson Addison-Wesley 2.1-1 2 Acute Angles and Right Triangle.
