Question

The picture shows a triangular island Which expression shows the value of Q?

Answer 1

S/cos 55• the answer D

Answer 2

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°)

Answer is D