Mathematics

Mathematics

Problem

Let θ=28∘\theta = 28^{\circ}. a. (i) Calculate sin⁡(90∘−θ)\sin(90^{\circ}-\theta) correct to four decimal places. b. (ii) Using your answer to part (i), determine cos⁡θ\cos \theta to the same degree of accuracy. c. (iii) Hence find tan⁡θ\tan \theta correct to four decimal places.

Browse the problem library