cos45°×cos15°+sin225°×sin165° = 1。解释如下：三角函数的加法计算：这个问题涉及三角函数的加法和乘积计算。在处理这种问题时，首先需要使用三角函数的基础性质，如特殊角度的三角函数值。在这个问题中，我们还需要知道角度超过90度时的三角函数值，可以通过使用诱
车身尺寸方面,COS1的长宽高分别为483018681750mm(包括行李架在内的车型高度为1,775mm),轴距为2,800mm。有17寸和18寸两种轮毂可供选择,可分别匹配225/65R17和225/60R18的轮胎。 欧尚COS1的内饰设计首次曝光。新车内饰方面,采用了黑棕两色的搭配,既迎合了主流运动感,也更好的衬托了稳重豪华的感觉。仪表采用贯穿...
cos45°cos(-15°)+sin225°sin195°=cos45°cos15°+sin45°sin15°=cos30°= 3 2.故答案为: 3 2. 解析看不懂?免费查看同类题视频解析查看解答 特别推荐 热点考点 2022年高考真题试卷汇总 2022年高中期中试卷汇总 2022年高中期末试卷汇总 2022年高中月考试卷汇总 二维码 回顶部©2021 作业帮 联系方...
Find the exact value. sin 20 deg times cos 80 deg - cos 20 deg times sin 80 deg Find the exact value of sine at the given angle. 165 Find the exact value of: \cos(\arcsin(\frac{1}{2})). Find the exact value for the following. Do not use a calculator. cos 75 cos 15 +...
Find the exact value of sin 225 degrees. Find the exact value of the trigonometric function of the angle . Tan = ___ If \tan \theta = \frac{1}{2}; -\frac{\pi}{2} \lt \theta \lt \frac{\pi}{2} , find \sin \theta Solve \tan x\sin x - \sin x = 0 Find \sin 2x f...
\cos(-150°) Find the exact value of following trigonometric function: sin (- 7 pi/ 3). Find the exact value of the trigonometric function csc(3 pi/2). Find the exact value of the trigonometric function. cos (\frac{5\pi}{4}) Determine the value of sin (log_m m^{pi / 3})...
const char sintable[] ={ 0,9,18,27,35,44,53,62, 70,79,87,96,104,112,120,127, 135,143,150,157,164,171,177,183, 190,195,201,206,211,216,221,225, 229,233,236,240,243,245,247,249, 251,253,254,254,255,255}; double mycos(double deg) { return mysin(90-deg); } double...
最近在一次上班过程中听到了产品经理的抱怨,后来一时兴起就给产品经理写了一篇基于腾讯云 CodeBuddy 和 EdgeOne Pages MCP Server 帮助产品经理快速落地原型图的示例,给产品经理看后,产品经理表示很满意,在实现上没什么技术上的门槛,效果上远比其自身苦哈哈画两天原型图的效果要好很多,最重要是这个还很快,两句话搞定...
Typically, the cracking reaction is carried out at a temperature from 225 DEG to 350 DEG C, at a pressure of from 20 to 50 mmHg. These catalysts give high IPDI yields with high conversions of the carbamic acid esters.LUH, YUHSHI
a) \theta = 150^\circ b) \theta = 225^\circ Find the exact value of cos theta for the angle -4pi/3. Suppose that sin theta = x / {x + 2}. Find the expression in x for cos theta. Given that \cos \theta = 0.577, find \theta in degrees. If tan theta = 6/8 and cos ...