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out using trigonometric tables, evaluate:220 + Ccos270°sin2 64° + cos 64 sin 26 CBSE 2001ccossin220 sin 270sin 15° cos 75° cos 15 sin 75cos θ sin (90°-θ) + sin θ cos(90°-9)(ii) sec210°-cot 80% |
Answer» (i) (ii) |
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