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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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In the figure below the lines AB and CD are parallel. AD and CB intersect at X. AB = 6cm, CD = 9cm and DX
Given that Cos A = 5/13 and angle A is acute, find Tan A without
Given that sin (90-x)^0 = 0.8, where x is an acute angle, find
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trigonometry - Easy way of memorizing values of sine, cosine, and
A cylindrical water tank is of diameter 7 metres and height 2.8 metres. a) Find the capacity of the water tank in litres. b) Six members
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