SQRT1_2intermediate// Square root of 1/2 (= 1 / Math.SQRT2)
Math.SQRT1_2 // β 0.7071067811...
Math.SQRT1_2 === 1 / Math.SQRT2 // β trueUse Math.SQRT1_2 as a precomputed constant equal to 1/β2, useful in trigonometry and vector normalization.
Math.SQRT1_2 is the reciprocal of Math.SQRT2: SQRT1_2 = 1 / SQRT2.
Challenge: Verify that Math.SQRT1_2 === 1/Math.SQRT2.