Sniper Tools Design Co. introduces a new Mil-Spec version of its Angle Cosine Indicator (ACI). The device is guaranteed to be waterproof to 30 feet. Because there are no batteries or electronics to ...
Cosine and sine of an angle θ are defined to be the x and y-coordinates of the point P on the unit circle with the property that the line from O to P makes and angle θ with the positve x-axis. cos(θ) ...
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