DOnt understand this at all - Small Angle Approximations | Revision Server | Page 1

crystal geode Sep 14, 2023, 9:16 PM

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<@&791435371564892232> help me pls

cloud marten Sep 14, 2023, 9:20 PM

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theta is given in degrees

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but small angle aprox only works in radians

crystal geode Sep 14, 2023, 9:23 PM

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ok thanks

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what about part a aswell?

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uno the cos^2 part

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<@&791435371564892232>

cloud marten Sep 14, 2023, 9:35 PM

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part a just substitute cos(x) = 1- x^2/2 but remeber since x is small you can ignore the x^4 terms

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i meant theta for x

crystal geode Sep 14, 2023, 9:36 PM

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how would it turn out

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dyu mind doing it for me

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im hella confused

cloud marten Sep 14, 2023, 9:36 PM

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so 1-4cos(x) + 3cos^2(x) ≈ 1- 4(1-x^2/2) + 3(1-x^2/2)^2

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now u should be able to expand and simplify

#DOnt understand this at all - Small Angle Approximations