The result of expanding the trigonometry expression
is 
<h3>How to evaluate the expression?</h3>
The expression is given as:

Express
as
.
So, we have:

Open the bracket

Express 1 as cos°(Ф)

Hence, the result of expanding the trigonometry expression
is 
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Answer:
use PEDMAS
P: PARENTHESIS
E: EXPONENTS
D: DIVISON
M: MULTIPLICATION
A: ADDITION
S: SUBTRACTION
Step-by-step explanation:
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The answer is b, or 84ft squared. To find the area of a rectangle, you multiple the length by the width. So you multiply 10.5 by 8, which equals 84.
The factorised form of k2 - 17 k + 16
= the third one ...
(k-1)(k-16)
because the two numbers in the brackets, -1 and -16, must add to give the middle number of the quadratic, -17, and must multiply to give the integer on the right, 16,