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Isaac Physics Maths Help - Solving trig equations 3 (T8 - C3)

Hi, I'm struggling with answering this question from IsaacPhysics - Solving Trig Equations 3 Isaac Physics
Could someone please say some pointers for me to try?

Thanks :smile:
(edited 1 month ago)
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Original post by Avogadro’s Con
Hi, I'm struggling with answering this question from IsaacPhysics - Solving Trig Equations 3 Isaac Physics
Could someone please say some pointers for me to try?Thanks :smile:

Could try the sum to product identities. Theyre just based on the usual addition identities.
(edited 1 month ago)

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