Quadrant Angles & Unit Circle: 2 1. Research the definition of quadrant (or quadrantal) angles: An angle in standard position whose terminal may lies along one of the axes. 2. On the sets of axes below, sketch 2 pairs of quadrant angles and appropriately label their measures. 450 Fig. 3.1 Fig. 3.2 Table 1: (Memorize) 0o 90 180 270 cost 0 - I 0 sin O O 1 0 tan O 0 undefined 0 undefined Examples: 1 V3 1. If (2 ' 2 ) is a point on the unit circle and on the terminal side of angle in standard position, th (a) sin 0 = (b) cos0 = - Z (c) tan 0 = = 13 . -2 = -13 (d) Find O to the nearest degree. P (15 275 2. The terminal side of angle in standard position intersects the unit circle at 5 5 (a) sin 0 = find (b) cos 0 = (c) tan 0 =gebra II 3. For each angle 6 in standard position, determine to the nearest tenth the coordinates of the point where the terminal side intersects the unit circle: (a) -180 (b) 1370 4 . If is a point on the unit circle and on the terminal side of angle in standard position, find (a) y = (b) sin 0 = (c) cos 0 = (d) tan 0 = 5. Each of the given points lies on the terminal side of angle 0 . Find (a) " (b) sine (c) cose (d) tane i. (3, 4 ) : ii. (-5, 12): iii. (- 8, 15): Reference Gantert, Ann Xavier (2009). Algebra 2 & Trigonometry. New York: Amsco School Publication, Inc. Perfection Learning. Common Core Algebra 2. Iowa: Amsco Publication, Inc. 2016