Trigonometry Worksheets

One steams due north for 130 miles the other on a

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Unformatted text preview: he two ships be at 16.15? (A knot is a speed of 1 nautical mile per hour.) © Frank Tapson 2004 [trolPT:32] Trigonometry T/37 1. For a triangle which has edges of 5.2 cm, 3.9 cm and 6.1 cm, calculate the size of of the largest angle. 2. Triangle ABC has AB = 8.3 cm , BC = 7.8 cm and ∠ ABC = 56º. Find the length of AC. 3. In triangle LMN, L = 42º, 4. Find the area of triangle ABC which has AB = 12 cm , BC = 14 cm and ∠ ABC = 36º. 5. In the triangle PQR, PQ = 3.9 cm , QR = 5.1 cm and ∠ PQR = 131º. Calculate the length of PR. 6. For each of these, give the three smallest possible positive angles having these sine values (i) 0.150 (ii) 0.964 (iii) – 0.708 7. For each of these, give the three smallest possible positive angles having these cosine values (i) 0.257 (ii) 0.693 (iii) – 0.861 8. Given the values of the following (i) sine 130º (iv) cosine 150º 9. m = 4.3 cm and l = 5.4 cm. Find M. (ii) sine 179º (v) cosine 108º (iii) sine – 265º (vi) cosine – 283º Find the area of a triangle whose edges are 10, 12 an...
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