Derive these identities using the addition or subtraction formulas for sine or cosine:

a. sin a sin b = 1 / 2 (cos (a - b) - cos (a + b))

b. sin a cos b = 1 / 2 (sin (a + b) + sin (a - b))

Is 0.35 greater than 0.53

Change the mixed number to an improper froction 31/10

What is 46 divided by 5,624

Which biconditional is NOT a good definition? a.) A whole number is even if and only if it is divisible by 2 b.) A whole number is off if and only if the number is divisible by 2 c.

Tina brought six times as many shirts as Maria. She then purchased five more while shopping. Tina's total number of shirts by the end of the day was twenty-three. How many did Maria bring? 3 shirts 6 shirts 11 shirts 15 shirts

31/9 as a mixed number

Find 4x when 3x equals 3

Solve 64x3 - 1 = 0.

35x-3+2+146x=180 find value of x

What is the result of converting 6 inches into centimeters