Radians | Revision Server | Page 1

muted oracle Mar 24, 2023, 7:39 PM

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How do you work this out?

muted oracle Mar 24, 2023, 8:31 PM

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<@&791435371564892232>

last rapids Mar 24, 2023, 10:23 PM

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so for part a:
-figure out an expression for angle C in terms of theta by using angles in a triangle sum to 180
-use the sine rule with sides AB and AC then rearrange to make AC the subject and simplify

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for part b:
-use your small angle approximations for sin(theta) and cos(theta), which i’ll type below, then simplify

muted oracle Mar 25, 2023, 6:46 PM

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@last rapids

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What would you do from here?

last rapids Mar 25, 2023, 7:07 PM

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hmm

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id say to write what sin(3pi/4) actually is

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then use the sine addition formula for the denominator

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then simplify

#Radians