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 3 years ago
Use the double angle formula to rewrite the equation y = 4sin^2 (slashed zero)  2.
 3 years ago
Use the double angle formula to rewrite the equation y = 4sin^2 (slashed zero)  2.

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tdabboud
 3 years ago
Best ResponseYou've already chosen the best response.2is the slashed zero theta?

tdabboud
 3 years ago
Best ResponseYou've already chosen the best response.2it reduces to \[y = 2 \cos(2\theta)\]

dakid91
 3 years ago
Best ResponseYou've already chosen the best response.0Can you show me how it works?

tdabboud
 3 years ago
Best ResponseYou've already chosen the best response.2You need to simply use that cos(2A) = 1 2 sin^2(A)

tdabboud
 3 years ago
Best ResponseYou've already chosen the best response.2so from this we take theta to be A

tdabboud
 3 years ago
Best ResponseYou've already chosen the best response.2if you rewrite the equation you gave in that form it becomes.. 2 + 4sin^2(A)

tdabboud
 3 years ago
Best ResponseYou've already chosen the best response.2from here we can factor out a 2 which leaves us with 2(12sin^2(A)) and you can see that the values under the parenthesis is just cos(2A) from the identity. So the answer you end up with after plugging in theta for A, is just 2cos(2Theta)

dakid91
 3 years ago
Best ResponseYou've already chosen the best response.0Yes. Thank you for giving a detailed explanation.

tdabboud
 3 years ago
Best ResponseYou've already chosen the best response.2yeah no problem, glad i could help
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