Aladder leans against the side of a house. the angle of elevation of the ladder is 69 degrees, when the bottom of the ladder is 12 ft from the side of the house . find the length of the ladder.

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?