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作业:求算式 12*cos3.16-72*(cos(2*3.16))*(36*(cos3.16)^2+325)^(-1/2)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2 的值.
题型:数学计算
解:
12*cos3.16-72*(cos(2*3.16))*(36*(cos3.16)^2+325)^(-1/2)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*(cos6.32)*(36*(cos3.16)^2+325)^(-1/2)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*0.999322*(36*(cos3.16)^2+325)^(-1/2)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*0.999322*(36*(-0.999831)^2+325)^(-1/2)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*0.999322*360.987833^(-1/2)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*0.999322*360.987833^(-0.5)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*0.999322*360.987833^-0.5-(36*(-0.999831)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*0.999322*360.987833^-0.5-360.987833^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*0.999322*360.987833^-0.5-360.987833^(-1.5)*2592*(sin3.16)^2*(cos3.16)^2
=12*cos3.16-72*0.999322*360.987833^-0.5-360.987833^-1.5*2592*(-0.018406)^2*(cos3.16)^2
=12*cos3.16-72*0.999322*360.987833^-0.5-360.987833^-1.5*2592*(-0.018406)^2*(-0.999831)^2
=12*-0.999831-72*0.999322*360.987833^-0.5-360.987833^-1.5*2592*-0.018406^2*-0.999831^2
=12*-0.999831-72*0.999322*0.05263246590666-360.987833^(-1.5)*2592*(-0.018406)^2*(-0.999831)^2
=12*-0.999831-72*0.999322*0.05263246590666-0.000145801218477*2592*(-0.018406)^2*(-0.999831)^2
=12*-0.999831-72*0.999322*0.05263246590666-0.000145801218477*2592*0.000338780836*(-0.999831)^2
=12*-0.999831-72*0.999322*0.05263246590666-0.000145801218477*2592*0.000338780836*0.999662028561
=-11.997972-72*0.999322*0.05263246590666-0.000145801218477*2592*0.000338780836*0.999662028561
=-11.997972-71.951184*0.05263246590666-0.000145801218477*2592*0.000338780836*0.999662028561
=-11.997972-3.786968-0.000145801218477*2592*0.000338780836*0.999662028561
=-11.997972-3.786968-0.377917*0.000338780836*0.999662028561
=-11.997972-3.786968-0.000128*0.999662028561
=-11.997972-3.786968-0.000128
=-15.78494-0.000128
=-15.785068 答案:12*cos3.16-72*(cos(2*3.16))*(36*(cos3.16)^2+325)^(-1/2)-(36*(cos3.16)^2+325)^(-3/2)*2592*(sin3.16)^2*(cos3.16)^2=-15.785068 注:弧度制你的问题在这里没有得到解决?请到 热门难题 里面看看吧!