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Mathematics, 14.10.2019 01:30 cobalt3931

Solve
(cos θ + cos θ)2 + (cos θ + cos θ)2

a. sin2 θ
b. 4
c. 8cos2θ
d. cos2 θ

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You know the right answer?
Solve
(cos θ + cos θ)2 + (cos θ + cos θ)2

a. sin2 θ
b. 4
c. 8cos2θ
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