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mathematicsprinted 110 · PDF 111
165 pagesrevision 46935
printed 110 · PDF 111
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Q7a(i) - Angle of elevation from X to Q refers to the angle that the line XQ
makes with the horizontal base or how ‘elevated’ the line is, in degrees, from
the base. 2 of the lengths are known so tan can be used to find the angle.
Q7a(ii) - Using the vertical triangle XPR, PR can be found. Pythagorean
theorem can be used to find the hypotenuse of triangle PQR, PQ.
Q7b - Sine rule can be used to equate the ratios of the sin of the angle to the
length opposite to that angle.