If sinΘ + cosΘ=1 and sinΘ - cosΘ=1, find the number of degrees in Θ in the interval 0°≤ Θ< 180°. Thanks in advance.
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$\displaystyle \sin{\theta} + \cos{\theta} = 1$ $\displaystyle \sin{\theta} - \cos{\theta} = 1$ ------------------------------- add 'em up $\displaystyle 2\sin{\theta} = 2$ $\displaystyle \sin{\theta} = 1$ $\displaystyle \theta = ?$
Ok. I think I got it. Thanks skeeter.
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