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〖1/1算式〗
作业:求算式 12*cos106-72*(cos(2*106))*(36*(cos106)^2+325)^(-1/2)-(36*(cos106)^2+325)^(-3/2)*2592*(sin106)^2*(cos106)^2 的值.
题型:数学计算
解:
12*cos106-72*(cos(2*106))*(36*(cos106)^2+325)^(-1/2)-(36*(cos106)^2+325)^(-3/2)*2592*(sin106)^2*(cos106)^2
=12*cos106-72*(cos212)*(36*(cos106)^2+325)^(-1/2)-(36*(cos106)^2+325)^(-3/2)*2592*(sin106)^2*(cos106)^2
=12*cos106-72*(-0.057472)*(36*(cos106)^2+325)^(-1/2)-(36*(cos106)^2+325)^(-3/2)*2592*(sin106)^2*(cos106)^2
=12*cos106-72*(-0.057472)*(36*0.686487^2+325)^(-1/2)-(36*(cos106)^2+325)^(-3/2)*2592*(sin106)^2*(cos106)^2
=12*cos106-72*(-0.057472)*341.965518^(-1/2)-(36*(cos106)^2+325)^(-3/2)*2592*(sin106)^2*(cos106)^2
=12*cos106-72*(-0.057472)*341.965518^(-0.5)-(36*(cos106)^2+325)^(-3/2)*2592*(sin106)^2*(cos106)^2
=12*cos106-72*(-0.057472)*341.965518^-0.5-(36*0.686487^2+325)^(-3/2)*2592*(sin106)^2*(cos106)^2
=12*cos106-72*(-0.057472)*341.965518^-0.5-341.965518^(-3/2)*2592*(sin106)^2*(cos106)^2
=12*cos106-72*(-0.057472)*341.965518^-0.5-341.965518^(-1.5)*2592*(sin106)^2*(cos106)^2
=12*cos106-72*(-0.057472)*341.965518^-0.5-341.965518^-1.5*2592*(-0.727143)^2*(cos106)^2
=12*cos106-72*(-0.057472)*341.965518^-0.5-341.965518^-1.5*2592*(-0.727143)^2*0.686487^2
=12*0.686487-72*-0.057472*341.965518^-0.5-341.965518^-1.5*2592*-0.727143^2*0.686487^2
=12*0.686487-72*(-0.057472)*0.054076533233679-341.965518^(-1.5)*2592*(-0.727143)^2*0.686487^2
=12*0.686487-72*(-0.057472)*0.054076533233679-0.000158134462065*2592*(-0.727143)^2*0.686487^2
=12*0.686487-72*(-0.057472)*0.054076533233679-0.000158134462065*2592*0.528736942449*0.686487^2
=12*0.686487-72*(-0.057472)*0.054076533233679-0.000158134462065*2592*0.528736942449*0.471264401169
=8.237844-72*(-0.057472)*0.054076533233679-0.000158134462065*2592*0.528736942449*0.471264401169
=8.237844-(-4.137984)*0.054076533233679-0.000158134462065*2592*0.528736942449*0.471264401169
=8.237844-(-0.223768)-0.000158134462065*2592*0.528736942449*0.471264401169
=8.237844--0.223768-0.409885*0.528736942449*0.471264401169
=8.237844--0.223768-0.216721*0.471264401169
=8.237844--0.223768-0.102133
=8.461612-0.102133
=8.359479 答案:12*cos106-72*(cos(2*106))*(36*(cos106)^2+325)^(-1/2)-(36*(cos106)^2+325)^(-3/2)*2592*(sin106)^2*(cos106)^2=8.359479 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!