Solving Trig/Algebra Questions: Finding the Missing Factor -√2/2

[majinkenji]

Hello, All,

I am unclear what my oversight is on this one -- supposed to be getting -√2 as the answer on these practice worksheets, however I keep getting -√2/2. Where is the factor? Thank you for your guidance

(cos^2 ∏) / (sin 5∏/4)

(-1)^2 / (-√2/2)

(1) * (-2/√2)

(-2/√2) * (√2/√2)

(-√2/2)

?

-mk

 

[NascentOxygen]

In simplifying this, what is the final numerator: (-2/√2) * (√2/√2)

 

[CompuChip]

(-2/√2) * (√2/√2)

Try re-arranging this as

-2/(√2 √2) * (√2)

 

[majinkenji]

got it, thank you very much :)