Answer:
(cos a cos b - sin a sin b)
Step-by-step explanation:
It's easy
Hi there!
First we need to remember the following.

Now substitute both of the formulas.

Work out the parenthesis.

And finally collect terms.

~ Hope this helps you!
The square's diagonal is the triangle's hypotenuse.
The Pythagorean theorem is =
Here, 'c' is the hypotenuse and 'a' and 'b' are the two sides of the triangle.
As the side is given 12 inches, so this becomes




inches
Answer:
14 = x
Step-by-step explanation:
-2 on both sides you get 7 = x/2, multiply both sides by 2 and you get 14 = x
Answer:
If she buys a boat without a down payment, then the affordable price is 5,700.
Step-by-step explanation:
Her bank charges 5% interest per year.
Let, payment = p,
p = 250(\frac{1-(1+\frac{0.05}{12})^-24}{\frac{0.05}{12}})
p = 5698.47
After round off p = 5700