Hey there, got a quick question. How do I find the equivalent sine function for y = cos(x+pi/8)
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Originally Posted by sysd Hey there, got a quick question. How do I find the equivalent sine function for y = cos(x+pi/8) $\displaystyle sin(x) = cos(x - \pi / 2)$ Hence $\displaystyle cos(x + \pi / 8) = cos(x - \pi / 2 + 5 \pi / 8) = sin(x + 5 \pi / 8)$ -Dan
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