>
数学
>
化简sin(θ-5π)cos(π/2+θ)cos(4π-θ)/cos(3π-θ)sin(θ-3π)sin(-θ-4π)
人气:156 ℃ 时间:2020-04-27 12:22:05
解答
原式=-sin(θ)*(-1)sin(θ)cos(θ)/-cos(θ)*(-1)sin(θ)*(-1)sin(θ)=-1
推荐
化简:sin(a+5π)cos(-π/2-a)·cos(8π-a)/sin(a-3π)·sin(-a-4π)
化简:[ cos(α-π/2)/sin(5π/2+α) ] ×sin(α-2π) × cos(2π-α)
[sin(5π-α)cos(-π-α)]/[cos(α-π)cos(π/2+α)]化简
化简:sin^3(π/2+a)+cos^3(3π/2-a)/sin(3π+a)+cos(4π-a)-sin(5π/2+a)*cos(3π/2+a)
化简sin(a-5π)cos(-π/2-a)cos(8π-a)/sin(a-3π/2)sin(-a-4π)
AgcL在K2SO4中溶解度是增大还是减小
if [a] indicates the greatest integer less than a,then
in the western countries,most of the children ____their father
猜你喜欢
19乘12乘19分之1 (3分之1加7分之1)乘21
汽车驾驶员改进驾驶技术后,每行驶200km可节约汽油7.2L.如果行驶12000km,可以节约汽油多少升?
仿句 示例:生命就要像蝉一样,即使短暂,也要固执地等待.句子:生命?
.以'梦'字为尾的四字词或诗..或者比较伤感含韵点的也可以.最好是尾字带'梦'字的.
鹊踏枝 冯延巳 背景简介
To make his dream come true,Luffy has to reach the end of the most dangerous ocean.He follows the way of the dead King u
甲烷燃烧要放出热量,水的分解要吸收能量,试从化学键的角度分析原因.
It ___(rain)for half a day and I don't think it _____(last)long.
© 2025 79432.Com All Rights Reserved.
电脑版
|
手机版