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Right-Angled Trigonometry

Example The cuboid below has length AB = 4cm, DE = 6cm and AF = 12cm. Work out the lengths of the diagonals ( i ) AE (ii) BH (iii) EH . Right-Angled Trigonometry. D. C. Involving 3D. G. H. E. B. F. A. E. A. D. H. B. C. Example

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Right-Angled Trigonometry

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  1. Example The cuboid below has length AB = 4cm, DE = 6cm and AF = 12cm. Work out the lengths of the diagonals (i) AE (ii) BH (iii) EH Right-Angled Trigonometry D C Involving 3D G H E B F A

  2. E A D H B C Example The figure is a pyramid on a square base ABCD. The edges of the base are 30cm long and the height, EH, of the pyramid is 42cm. Find a) the length of AC b) the angle EAH

  3. E F D A B C Example ABCDEF is a prism with a triangular cross-section. , BC = 8m, AB = 6m and CD = 20m. Find (i) AC (ii) BD (iii) the total surface area of the prism.

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