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，可以通过使用诱导公式...
2.1.225 Part 1 Section 17.6.19, sectPr (Previous Section Properties) 2.1.226 Part 1 Section 17.6.21, top (Top Border) 2.1.227 Part 1 Section 17.6.22, type (Section Type) 2.1.228 Part 1 Section 17.7.1, Style Inheritance 2.1.229 Part 1 Section 17.7.2, Style Hierarchy 2.1....
而SHARP的单行显示计算器是先按“度.分秒”的形式输入，然后按[→DEG]键转换，再按[cos]键计算。
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...
cos (\frac{5\pi}{4}) Find the exact value of the following trigonometric function. \cos(-150°) Find the exact value of the trigonometric function csc(3 pi/2). Find the exact value of following trigonometric function: sin (- 7 pi/ 3)....
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...
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\cos(-150°) Find the exact value of the trigonometric function. cos (\frac{5\pi}{4}) Find the exact value of following trigonometric function: tan ({-5 pi}/2). Find the exact value of the trigonometric function csc(3 pi/2). Find the exact value of following trigonometric...
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
Find the exact value of sin 225 degrees. Find the exact value. No decimal answers. Given that sin A = -4/5 with A in quadrant IV, find sin 2A and tan A. Find the exact value of the trigonometric function given that sin(u) = -24...