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Expand each of the following using the compound angle formulae:

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Expand each of the following using the compound angle formulae:

(a) \(\cos \left(x-40^{\circ}\right)\)

(b) \(\sin \left(x-50^{\circ}\right)\)

(c) \(\cos (2 x+y)\)

(d) \(\sin \left(10^{\circ}+\mathrm{B}\right)\)

(e) \(\cos \left(60^{\circ}-\mathrm{A}\right)\)

(f) \(\sin \left(45^{\circ}-x\right)\)

(g) \(\sin (\mathrm{A}+\mathrm{A})\)

(h) \(\cos (\mathrm{A}+\mathrm{A})\)
in Mathematics by ♦ Diamond (75,025 points) | 14 views

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