Question

sign on the roadway at the top of a mountain indicates that for the next 4 miles the grade is 9.5° (see figure). Find the change in elevation for a car descending the 4-mile stretch. (Round your answer to two decimal places.)

Answer 1

Answer:

Draw a picture of this.  If the grade is 10.5 degrees, then the value of the angle is 90 - 10.5 = 79.5.

The length of this side, the hypotenuse, is 4

The base angle is 90.

therefore, the third angle is 10.5.

Step-by-step explanation:

Answer 2

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