Prove that:cos^2(45+A)+cos (45-A)=1​

Step-by-step explanation:

Step-by-step explanation:

Prove that

We know that

We can then write

Taking the square of the above expression, we get

Similarly, we can write

Combining (1) and (2), we get

the best buy, is the 4- kilogram bag of lollipops for $18.40.

step-by-step explanation:

i found my answer by dividing the cost of each bag by their respective weights.

14.88 divided by 2 = 7.44

17.29 divided by 3 = 5.77

18.4 divided by 4 = 4.6

24.4 divided by 5 = 4.88

by this, i found that the 4 kilo bag is the best buy.

use formula for the circle a=3.14

step-by-step explanation: