value of sin 45 in decimals. Share with your friends Share 1 Ashutosh Verma answered this Please find below the solution to the asked query: We know : Sin 45° = 12 , So Sin 45° = 12 = 12×22 = 22 = 1.41422 =0.7071 ( Ans ) Hope this information will clear your doubts about topic. 1 View Full Answer