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〖1/1算式〗
作业:求算式 12*cos106.12-72*(cos(2*106.12))*(36*(cos106.12)^2+325)^(-1/2)-(36*(cos106.12)^2+325)^(-3/2)*2592*(sin106.12)^2*(cos106.12)^2 的值.
题型:数学计算
解:
12*cos106.12-72*(cos(2*106.12))*(36*(cos106.12)^2+325)^(-1/2)-(36*(cos106.12)^2+325)^(-3/2)*2592*(sin106.12)^2*(cos106.12)^2
=12*cos106.12-72*(cos212.24)*(36*(cos106.12)^2+325)^(-1/2)-(36*(cos106.12)^2+325)^(-3/2)*2592*(sin106.12)^2*(cos106.12)^2
=12*cos106.12-72*0.181485*(36*(cos106.12)^2+325)^(-1/2)-(36*(cos106.12)^2+325)^(-3/2)*2592*(sin106.12)^2*(cos106.12)^2
=12*cos106.12-72*0.181485*(36*0.768598^2+325)^(-1/2)-(36*(cos106.12)^2+325)^(-3/2)*2592*(sin106.12)^2*(cos106.12)^2
=12*cos106.12-72*0.181485*346.266744^(-1/2)-(36*(cos106.12)^2+325)^(-3/2)*2592*(sin106.12)^2*(cos106.12)^2
=12*cos106.12-72*0.181485*346.266744^(-0.5)-(36*(cos106.12)^2+325)^(-3/2)*2592*(sin106.12)^2*(cos106.12)^2
=12*cos106.12-72*0.181485*346.266744^-0.5-(36*0.768598^2+325)^(-3/2)*2592*(sin106.12)^2*(cos106.12)^2
=12*cos106.12-72*0.181485*346.266744^-0.5-346.266744^(-3/2)*2592*(sin106.12)^2*(cos106.12)^2
=12*cos106.12-72*0.181485*346.266744^-0.5-346.266744^(-1.5)*2592*(sin106.12)^2*(cos106.12)^2
=12*cos106.12-72*0.181485*346.266744^-0.5-346.266744^-1.5*2592*(-0.639733)^2*(cos106.12)^2
=12*cos106.12-72*0.181485*346.266744^-0.5-346.266744^-1.5*2592*(-0.639733)^2*0.768598^2
=12*0.768598-72*0.181485*346.266744^-0.5-346.266744^-1.5*2592*-0.639733^2*0.768598^2
=12*0.768598-72*0.181485*0.053739622132133-346.266744^(-1.5)*2592*(-0.639733)^2*0.768598^2
=12*0.768598-72*0.181485*0.053739622132133-0.000155197179814*2592*(-0.639733)^2*0.768598^2
=12*0.768598-72*0.181485*0.053739622132133-0.000155197179814*2592*0.409258311289*0.768598^2
=12*0.768598-72*0.181485*0.053739622132133-0.000155197179814*2592*0.409258311289*0.590742885604
=9.223176-72*0.181485*0.053739622132133-0.000155197179814*2592*0.409258311289*0.590742885604
=9.223176-13.06692*0.053739622132133-0.000155197179814*2592*0.409258311289*0.590742885604
=9.223176-0.702211-0.000155197179814*2592*0.409258311289*0.590742885604
=9.223176-0.702211-0.402271*0.409258311289*0.590742885604
=9.223176-0.702211-0.164633*0.590742885604
=9.223176-0.702211-0.097256
=8.520965-0.097256
=8.423709 答案:12*cos106.12-72*(cos(2*106.12))*(36*(cos106.12)^2+325)^(-1/2)-(36*(cos106.12)^2+325)^(-3/2)*2592*(sin106.12)^2*(cos106.12)^2=8.423709 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!