https://www.symbolab.com/solver/step-by-step/sin%5Cleft(%5Cfrac%7Bpi%7D%7B4%7D-x%5Cright)?or=input
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Rewrite with b = sin a
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44
45
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49
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let c be defined as
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equals
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this also means: (will be useful later)
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b=c
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equals
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As the angle is 45 the line is a straight line by geometry.
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