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Given Sin (90 – a) = 1/2 , find without using tables or calculators the value of Cos a.
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Given that Cos A = 5/13 and angle A is acute, find Tan A without
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Frank Solutions Class 9 Maths Chapter 27 Trigonometrical Ratios of
Without using trigonometric tables evaluate: Without using
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Construct rectangle ABCD in which AB = 4cm and BC = 3cm. Inside the rectangle construct the locus of point L1 which is 3 cm
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Sin(90-A), Sin(90+A), Cos(180-A), Cos(180+A), Sin(270-A), Sin(270+