Q4 (a) From the figure (1) given below, find the values of:

(i) 2 sin y - cos y
(ii) 2 sin x - cos x
(iii) 1 - sin x + cos y
(iv) 2 cos x - 3 sin y + 4 tan x


(b) In the figure (2) given below, ∆ABC is right-angled at B. If AB = y units, BC = 3 units and CA = 5 units, find
(i) sin x0
(ii) y.

Solution

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