trig identities | Mathematics | Page 1

earnest bane Nov 30, 2022, 9:22 PM

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help

icy plume Nov 30, 2022, 9:53 PM

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(i) Expand out the RHS using the formula for $\sin(A-B)$ \ \ (ii) Substitute the result from (i)

median kiteBOT Nov 30, 2022, 9:53 PM

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Civil Service Pigeon

earnest bane Nov 30, 2022, 10:26 PM

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Sorry still a bit confused

unborn copper Nov 30, 2022, 10:30 PM

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Substitute the given identity into the equation given to solve and solve the resulting equation (just one sine term equal to a constant) by the methods you know.

analog tartan Dec 1, 2022, 3:22 PM

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sin(a-b)=sin a cos b - sin b cos a

median kiteBOT Dec 1, 2022, 3:23 PM

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OmegaNebulaPyx

analog tartan Dec 1, 2022, 3:24 PM

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and we need to find it equal to 7

median kiteBOT Dec 1, 2022, 3:24 PM

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OmegaNebulaPyx

analog tartan Dec 1, 2022, 3:25 PM

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and then we solve

#trig identities