Question

GIVING MEDALS.
simplify sqrt(1-cos theta)(1+cos theta)

Answer 1

\[\sqrt{(1-\cos\theta)(1+\cos\theta)}~~?\]

Answer 2

yes

Answer 3

Multiply. You have the following situation:
\[(a-b)(a+b)=a^2-b^2\]

Answer 4

okay whats next @SithsAndGiggles

Answer 5

@mathstudent55 @RaphaelFilgueiras @Whitemonsterbunny17

Answer 6

What's \((1-\cos\theta)(1+\cos\theta)\) equivalent to, using the difference of squares formula above?

Answer 7

im not sure , answer choices

Answer 8

\[(a-b)(a+b)=a^2-b^2\]
In this case \(a=1\) and \(b=\cos\theta\).

Answer 9

ookokay so which one

Answer 10

can u help with this @SithsAndGiggles @ganeshie8

Answer 11

do u know @ganeshie8