Convert from radian to degree or degree to radian as specified in the question. Note: Write the exact answer but not the approximate value (For example write = but not 0.8). Your answer should be written in terms of Pi or pi or a if there is a * in the answer. 16 rad = deg 5 deg = rad 23 rad = deg 24 deg = rad 57 rad = i zi deg 51 deg = j zy radA central angle of 5 degrees is subtended by an arc of length 25 cm. Find the radius of the circle. Note: Write the exact answer but not the approximate value (For example write = or 4/5 but not 0.8). Your answer should be written in terms of Pi or pi or * if there is a * in the answer. cmA circle has diameter 19 cm. \\What angle is subtended at the center of the circle by an arc of 19 cm? Mote: Write the exact answer but not the approximate value (For example write % or 4/ but not 0.3) 8= @ @ radians Which of the following expressions are identities and which are equations? (a) cos 2x = 2 sin I COST Click for List identity (b) tan 21 = 2 tan r equation 1+tan2 I (c) tan r - cot I = -2 cot (2 1) Click for ListIf sin A = - _ and tan B = 2 4 15 where A and B are in the interval [/2, 3x/2], What are the exact values of the following trigonometric functions? (Matching problem) Answer: cos (A) v sin (B) - cos (2 B ) cos (2 A ) cos (B) sin (2 A ) tan (A) sin (2 B ) - tan (A + B) cos (2 A - 2 B) 1. V/15 2. 2-15 16 15+2:15 3. 15,15-2 60 4. 229 5 15 4 6. 3094+120,/15 3664 7. 14 16 221 229 2 9 V229 15 10 V/229