Trigonometry Worksheets

1 cm c 44 11 a triangle of area 214 cm2 has two edges

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Unformatted text preview: nterior vertex angle of 65º. What is its area? 16. A rhombus has an area of 36 cm2 and edges of length 6.7 cm. Give the sizes of its interior vertex angles. 17. A parallelogram has an area of 63 cm2. One of its edge-lengths is 7.2 cm, and one interior vertex angle is 54º. What is its other edge-length? 18. Two triangles have the same area. One has edges of 4.7 and 6.8 cm with an included angle of 49º. The other has two edges measuring 7.3 and 3.9 cm respectively. Calculate the size of one of the interior vertex angles of the second triangle. © Frank Tapson 2004 [trolPT:28] Trigonometry The Sine Rule In any triangle the length of any edge is proportional to the sine of the opposite angle. 1. 2. 3. 4. 5. 6. T/33 B a c b a c = = sine B sine A sine C A C b find b C = 73º c = 5.3 cm a = 11 cm ∠ BAC = 36º AC = 4.3 cm BC = 6.7 cm find ∠ ABC Triangle XYZ has ∠ YXZ = 28º ∠ YZX = 73º YZ = 9.3 cm find XY Triangle PQR has P = 41º p = 7.89 cm r = 10.1 cm find Q Triangle LMN has ∠ LMN = 56º ...
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This document was uploaded on 03/01/2014.

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