0.96593 (rounded)
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sin 105 = sin (60+45) = sin60cos45 + cos60sin45sin 105 = ((sqrt(3)/2)((sqrt(2)/2)) + ((1/2)((sqrt(2)/2)))sin 105 = (sqrt(6) + sqrt(2)) / 4
If tan 3a is equal to sin cos 45 plus sin 30, then the value of a = 0.4.
sin(40o) = 0.6428
SQRT(3)/4 - 1/4
It is: sin(62) = 0.8829475929.