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O bjective

Material Taken From: Mathematics for the international student Mathematical Studies SL Mal Coad , Glen Whiffen , John Owen, Robert Haese , Sandra Haese and Mark Bruce Haese and Haese Publications, 2004. Chapter 10 – Section B: Trigonometric Ratios. O bjective.

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O bjective

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  1. Material Taken From:Mathematicsfor the international student Mathematical Studies SLMal Coad, Glen Whiffen, John Owen, Robert Haese, Sandra Haese and Mark BruceHaese and Haese Publications, 2004

  2. Chapter 10 – Section B: Trigonometric Ratios Objective To find missing sides and angles of geometrical shapes by using SOHCAHTOA

  3. 20 θ 21 Find, to 1 decimal place, the measure of the angle marked  in: 2) 1)  2 5

  4. Find to 4 sig. figs the unknowns in the following diagrams: 3) 4)

  5. Right angled triangles occur in chord and tangent problems

  6. 5) A chord of a circle subtends an angle of 112° at its center. Find the length of the chord if the radius of the circle is 6.5 cm

  7. 6) A rhombus has diagonals of length 10cm and 6 cm respectively. Find the smaller angle of the rhombus.

  8. 7) Find x given:

  9. Homework • 10B.3, pg 323 • #2b • 10B.4, pg325 • #1ac, 2ac, 3, 5, 6, 8, 9

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