AM-2745

R-formula

A Math · Secondary 4 · Easy · R-formula

The distance

d

metres of a point from a wall is given by

d=2\sin\theta+5\cos\theta

. Find the maximum possible value of

d

.

$\sqrt{29}\,\text{m}$
$7\,\text{m}$
$\sqrt{13}\,\text{m}$
$5\,\text{m}$

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