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1. Express the following in terms of ratios of positive angles which are less thu
(a) sin(- 70°).
(b) cos(-65°).
(d) sin 1729
(e) cos 375°
(g) cosec 843°
(h) sec (- 928°)
(c) tan 155º.
(f) tan (– 2349)
(i) cot 1145°
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