Which relationship in the triangle must be true?

sin (B) = sin (A)

sin (B) = cos (90 - B)

cos (B) = sin (180 - B)

cos (B) = cos (A)

The perimeter of a triangle DEF is 81 units. The length of side DE is twice the length of side EF, and the length of side DF is 4 units less than the length of side DE. Let s represent the length, in units, of side EF.

1/3 to 2/3 identify the change

A. Give an example of one number that meets all the criteria of a real, rational, integer but is NOT a natural number.

Mr. butler posts his students art work on a bulletin board of the width and length of the

What is 14.7 times 11.361 showing your work?

How would you get y by it's self

What property is illustrated by the following statement? If p+3=5, then 5 = p+3

In a parking lot, 1 out of every 8 cars are blue. what percent of the cars in this lot are blue

Write 48 ten thousands, 21 hundreds, and 7 tens in word form and expanded form.

Slope of 2 and passes through (-5,1)