Find the measure of the indicated angle to the nearest degree.

9514 1404 393

  40°

Step-by-step explanation:

The side adjacent to the angle of interest and the hypotenuse are given, so the cosine relation is relevant.

  Cos = Adjacent/Hypotenuse

  cos(?) = 46/60

  ? = arccos(46/60) ≈ 39.9445°

  ? ≈ 40°

this is false ^.^ lol

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.