Is hand lotion homogeneous or heterogeneous

The trigonometric ratios sine and secant are reciprocals of each other

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.