+239 Assuming that sin Ø= Ø – k Ø 3, where k is a numerical constant, is a sufficient approximation to the value of sin Ø when Ø is a small angle, use the formula: Sin 3Ø = 3 sinØ - 4 sin3 Ø to show that k= 1/6. (This result gives, of course gives a better approximation than sin Ø = Ø)
