Express 5sin(theta) - 12cos(theta) in the form Rsin(theta-alpha)

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Thanks for the help....It really helped

nigelchiputura
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ok so this for the value of ALPHA is incorrect because the first term will be cos since the question is asking for R cos(x-a)

if the question was in form of sin then this would have been correct but because this has cos in it cos will have to be the first term so value of alpha should have been tanx=5/12

poseidon
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Great 🔥 🔥 🔥
PLEASE I have one as on set and am confused

johnexgraphics
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This is actually the compound identity for sin not the double angle

samykv
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Why havnt you pick -12 instead of you have pick 12.

PeterMsendo-eopw