1) Find x and H in the right triangle below a) x=8.90, H=18.27 b) x=8.90, H=12.87 c) x=8.09, H=12.87 d) x=9.1, H=12.0 2) Find the lengths of all sides of the right triangle below if its area is 400 a) x=40, H=44.721 b) x=44.721, H=40 c) x=20, H=44.721 d) x=20, H=89.442 3) Find the size of the angle marked q to 1 decimal place. a) q=60.0735 b) q=60.073 c) q=60.07 d) 60.1 4) ABC is a right-angled triangle. Find the length of the side CB a) CB=12 cm b) CB=6 cm c) CB=0.5 cm d) CB=30 cm 5) In a △ABC right angled at B if AB = 12, and BC = 5. Find sin A and tan A, cos C and cot C. a) sin A= 5/12, tan A= 5/13, cos C= 5/13 and cot C=5/12 b) sin A= 5/13, tan A= 5/13, cos C= 5/12 and cot C = 5/12 c) sin A= 5/13, tan A= 5/12, cos C= 5/13 and cot C=5/12 d) sin A= 5/13, tan A= 5/12, cos C= 5/13 and cot C=12/5 6) Find the value of x. Tan 3x= sin 45° cos 45° + sin 30 a) x=45° b) x=30° c) x=15° d) x=90° 7) Solve 4 cos 2 x + 7 sin x - 7 = 0, giving all values of x between 0° and 360° a) x=48.6°, 90°,131.4°,0° b) x=48.6°, 90° c) x=48.6°,131.4° d) x=48.6°, 90°,131.4°

Trigonometry

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