There are four different ways that Roger can walk from his house to work. Which route is the shortest distance? (Hint: 1 yd ≈ 0.9 m) Route Distance
A 1350 feet
B 1500 meters
C 320 yards
D 4 kilometers

I personally converted everything to feet.
We know that A= 1350 feet.
B= 1500 meters, and 1 meter equals about 3 feet. 1500*3 = 4500, so that tells us B is not the correct answer.
C = 320 yards. There are 3 feet in a yard. 320*3 = 960. A is now also incorrect.
D= 4km. It’s clear to say that there are thousands of feet in a single kilometer, so that removes D.
Thus, we are left with C, at 320 yards or 960 feet. This shows that C, 320 yards, is the shortest distance.

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.