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If secA = $$\frac{{17}}{8},$$ given that A < 90°, what is the value of the following?
If secA = $$\frac{{17}}{8},$$ given that A < 90°, what is the value of the following?
$$\frac{{34\sin A + 15\cot A}}{{68\cos A - 16\tan A}}$$
Answer & Solution
Correct Answer:
Option
B
$$\eqalign{
& \sec A = \frac{{17 \to H}}{{8 \to B}},\,A < {90^ \circ } \cr
& {L^2} = {H^2} - {B^2} \cr
& {L^2} = 289 - 64 \cr
& {L^2} = 225 \cr
& L = 15 \cr
& {\text{Then}}, \cr
& \frac{{34\sin A + 15\cot A}}{{68\cos A - 16\tan A}} \cr
& = \frac{{34 \times \frac{{15}}{{17}} + 15 \times \frac{8}{{15}}}}{{68 \times \frac{8}{{17}} - 16 \times \frac{{15}}{8}}} \cr
& = \frac{{30 + 8}}{{32 - 30}} \cr
& = \frac{{38}}{2} \cr
& = 19 \cr} $$
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