vera_ewing
  • vera_ewing
.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
jamiebookeater
  • jamiebookeater
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Nnesha
  • Nnesha
let cos theta = x so replace all cos with x \[\huge\rm (x-x)^2+(x+x)^2\] now solve
Nnesha
  • Nnesha
how did you get D ?
Nnesha
  • Nnesha
try again... you don't have to use a calculator it's just like (2-2)^2+ (2+2)^2

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vera_ewing
  • vera_ewing
16?
Nnesha
  • Nnesha
do you mean (2-2)^2+(2+2)^2 = 16 ??
vera_ewing
  • vera_ewing
Yeah
Nnesha
  • Nnesha
yeah right ...
Nnesha
  • Nnesha
\[\huge\rm \color{ReD}{(x-x)^2}+(x+x)^2\] now solve x-x= ?? x+x= ?? solve the parentheses
vera_ewing
  • vera_ewing
x-x=0 x+x=2x
Nnesha
  • Nnesha
yes right \[\huge\rm \color{ReD}{(0)^2}+(2x)^2= ??\]
vera_ewing
  • vera_ewing
2x(2x)=4x^2
vera_ewing
  • vera_ewing
So the answer is B?
Nnesha
  • Nnesha
yes right now replace x with cos theta = answer
vera_ewing
  • vera_ewing
Thank you!
Nnesha
  • Nnesha
my pleasure
anonymous
  • anonymous
Hey Vera its me starlord6200

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