10. Find the quadrant containing a if both cos(a) > 0 and tan(a) < 0. (a)...
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10. Find the quadrant containing a if both cos(a) > 0 and tan(a) < 0. (a) a must be in quadrant I (b) a must be in quadrant II (e) a must be in quadrant III (d) a must be in quadrant IV O (a) (d) (b) O (C) 13. If sin(x+y)=cos(x-y)=1, find values of x and y. Ox=y=45 Ox=2y O x=y=0 O x=y=90 14. What is the minimal value of sinx, if x is in the first quadrant? 0.5 0-2 O 0 -0.5 15. When the sun is at an angle of elevation of 32°, a building casts a shadow that's 152 feet from its base. What is the height of the building? (a) Approximately 100 feet. (b) Approximately 95 feet (c) Approximately 152 feet (d) Approximately 83 feet O (c) (b) (d) O (a) 10. Find the quadrant containing a if both cos(a) > 0 and tan(a) < 0. (a) a must be in quadrant I (b) a must be in quadrant II (e) a must be in quadrant III (d) a must be in quadrant IV O (a) (d) (b) O (C) 13. If sin(x+y)=cos(x-y)=1, find values of x and y. Ox=y=45 Ox=2y O x=y=0 O x=y=90 14. What is the minimal value of sinx, if x is in the first quadrant? 0.5 0-2 O 0 -0.5 15. When the sun is at an angle of elevation of 32°, a building casts a shadow that's 152 feet from its base. What is the height of the building? (a) Approximately 100 feet. (b) Approximately 95 feet (c) Approximately 152 feet (d) Approximately 83 feet O (c) (b) (d) O (a)
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