its a type of sine bar . it is used in metrology lab .from this equipment we can find tapered angle of a conical spcimen
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Sine= Opposite/ Hypotenuse Cosine= Adjacent/ Hypotenuse
Sine (0) = 0 Sin(30) = 0.5 Sin(45) = 0.7071... Sin(60) = 0.8660.... Sin(90) = 1 Are just a few of the Sine(Trigonometric) values.
√ 1/2 = sine(45)= cosine(45) -Key
0.602
In a right angle triangle divide the opposite by the hypotenuse to find the sine ratio.