The picture shows a triangular island: Which expression shows the value of q? r cos 55°
r sin 55°
s/sin55°
s/cos55°

In trigonometric ratios, the cos (x) = adjacent over hypotenuse.

Therefore, in the diagram,  cos (55°) = s/q

To isolate q, divide both sides by s

cos (55°) / s = 1/ q

Then flip both numerators and denominators (raise both sides to the power of -1)

q = s / cos (55°)

S/cos 55

Step-by-step explanation:

answer: d. $20

step-by-step explanation:

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