Question

In AHIJ, the measure of ZJ=90°, the measure of ZI=10°, and IJ = 67 feet. Which trig function would you use to solve x?

Answer 1

Trigonometric Ratios

The ratios of the different sides of a right triangle are called trigonometric ratios.

The trigonometric ratio called cosine is defined as the adjacent leg divided by the hypotenuse.

If we use the angle of 10°, the adjacent leg is 67 and the hypotenuse is x, thus

`\cos 10=(67)/(x)`

Solving for x we can have the answer to the problem