sin(40o) = 0.6428
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It is:- sin(40) = 0.6427876097
It is: sin(62) = 0.8829475929.
If tan 3a is equal to sin cos 45 plus sin 30, then the value of a = 0.4.
0.469471563
sin(49) = - 0.9537526528 ------------------------------In radian mode. sin(49) = 0.7547095802 -----------------------------In degree mode.