AM-2528

R-formula

A Math · Secondary 4 · Medium · R-formula

The distance of a point from a wall is given by

d = 4\cos\theta + 3\sin\theta

. It is known that

d = R\cos(\theta-\alpha)

, where

R>0

and

0^\circ<\alpha<90^\circ

. What is the exact value of

\tan\alpha

?

$\dfrac{3}{4}$
$\dfrac{4}{3}$
$\dfrac{5}{4}$
$\dfrac{4}{5}$

Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.

Loading problem…