2n +i sin) in trigonometric form then 11. Find the product of 4(cos+ i sin) and 5(cos write the answer in rectangular form. 3

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Q: Multiply. Leave the answer in trigonometric form. 2(cos 15° + i sin 15°) · 6(cos 20° + i sin 20°)

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Q: Apply half-angle formula to find: a. cos 15°           B. sin 15°          c. cos 5π/8

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A: given =3sin7πx+33cos7πxr=32+(33)2=6rewrite expression as=6(36sin7πx+336cos7πx)=6(12sin7πx+32cos7πx)

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A: Explained below