find the cardinal number for the following set A. A={x|x is a letter in the word introduce} The cardinal number of set A is__

To describe a sequence of transformations that maps triangle abc onto triangle a"b"c", a student starts with a reflection over the x-axis.how should the student complete the sequence of transformations to map triangle abc onto triangle a"b"c"? plz

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

25) 56(1) = 5b a. identity property of addition b. identity property of multiplication c. commutative property of multiplication d. commutative property of addition