Write the expression as the sine or cosine of an angle.
sin ſ cos - sin cos į
[?]
7
Hint: sin(A + B) = sin A cos B = cos A sin B
cos(A + B) = cos A cos B = sin A sin B

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212