Find the exact value of sin 105° using a suitable half angle formula.

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A: NOTE: Refresh your page if you can't see any equations. . the given point is so here we have

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A: Let the Points be : A-53,5B(-10,-103)Their Poistion vectors are :A→=-53 i^+5 j^B→=-10i^-103…

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Q: Find the exact value of cos105° using a half-angle formula. Show all work.

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