Trigonometry
Angle Sum and Difference, Double Angle and Half Angle Formulas
Find the exact value of:
Cos 52* cos 32* - sin 52* sin 32*

cos(84)

Step-by-step explanation:

cosAcosB - sinAsinB = cos(A+B)

cos(52)cos(32) - sin(52)sin(32)

= cos(52+32) = cos(84)

Or 0.1045

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.

$15 each

step-by-step explanation:

$45/3 children= $15 each