ECZ 2016 · GCE Paper 1 — Trigonometry
DEFG is a rectangular piece of land in which GE = 12.5 m (a diagonal) and DE = 7.5 m. Find the value of cos EĜF.
- A. 0.8
- B. 0.6
- C. 0.75
- D. 0.28
Verified working — step 1
GF is the side opposite DE, so GF = DE = 7.5 m. Triangle GFE has a right angle at F, with hypotenuse GE = 12.5. cos EĜF = adjacenthypotenuse= GFGE= 7.512.5= …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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