Two sides of a triangle are 5cm and 9cm long.The ratio of th

hongy152022-10-04 11:39:542条回答

Two sides of a triangle are 5cm and 9cm long.The ratio of the opposite angles is 1:3.
Determine the angles and the length of the third side of the triangle!

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jyk666 共回答了16个问题 | 采纳率87.5%
三角形的两边是5厘米和9厘米长.该两边相对角度比例为1 : 3.确定第三个三角形的一边所对的角度和长度! 设第三变为x,三个角为α,3α,π-4α 由三角面积公式 1/2*5x*sin3α=1/2*5*9sin4α=1/2*9*x*sinα 5sin3α=9si...
1年前
游戏的感情 共回答了19个问题 | 采纳率
三角形有两个边长为5cm和9cm,两边对应的角大小比例为1:3,求三角形的三个角和第三边长度、
1年前

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∵△ABC=△EDF,∴∠ABC=∠EDF.
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2.设五分硬币的数量为x,那么两角五分硬币的数量为14-x,根据题意得
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春天的风27 共回答了16个问题 | 采纳率87.5%
等腰三角形的一条腰长比底边的两倍少3米.周长是44米,求边长.
设底边长为x,腰就是2x-3,周长等于三边之和,so~
2*(2x-3)+x=44
x=10 底边长10米,腰长=2x-3=17
the attitude of most people to the Bermuda triangle is very
the attitude of most people to the Bermuda triangle is very awesome,so it's also known as the Devil's Triangle.3912
伤心的罗非鱼1年前3
YXC鱼腥草 共回答了14个问题 | 采纳率92.9%
很多人认为百慕大三角很可怕,所以他也叫 死亡三角
线性代数四维空间下三角形面积Find the area of the triangle with vertices (1
线性代数四维空间下三角形面积
Find the area of the triangle with vertices (1 0 1 2)(-2 2 0 1)(1 2 1 -1)
geniustt1年前1
春风太郎 共回答了17个问题 | 采纳率94.1%
|ab|=|(3,-2,1,1)| = 根号15,|ac|=|(0,-2,0,3)=根号13,|bc|=|(-3,0,-1,2)|=根号14
已知三边求面积△=√[s(s-a)(s-b)(s-c)] 其s=1/2(a+b+c)
求得面积为√586/4
The triangle's sides cross the y-axis at exactly two points
The triangle's sides cross the y-axis at exactly two points altogether.三角形的边穿过y轴,后面的at exactly two points altogether表示什么呢?
Therainstorm1年前3
uu印子 共回答了21个问题 | 采纳率95.2%
三角形的2边过y轴,共交于2点
1. 写一个三角形类Triangle,包含三个私有double类型成员属性sideA, sideB, sideC来表示三
1. 写一个三角形类Triangle,包含三个私有double类型成员属性sideA, sideB, sideC来表示三角形的三个边;包含一个构造方法Triangle( double x, double y, double z)设置三边,该方法中需要根据三个参数判断能否构成三角形,若能构成三角形则设置三边,若不能则报错.包含一个公有成员方法求三角形的面积.再写一个测试类,主方法中创建一个三角形对象,三边是 6.0, 8.0, 10.0,并求三角形的面积.
2. 写一个Java程序,求圆的周长和面积,半径是10.0.
3. 写一个Java程序,能实现华氏温度和摄氏温度的转换,转换方法是 H(t) = 1.8*t+32.
4. 编写程序,求1-1000内所有3的倍数之和.
5. 编写程序,使用if语句实现 min = a
8110111年前1
zhngxkun 共回答了21个问题 | 采纳率85.7%
可以理解成单身没烦恼,恋爱很头疼,三角恋很可怕啊呵呵 意思是说人越多越麻烦你可以理解为:一个和尚挑水喝 两个和尚抬水喝 三个和尚没水喝 一
利用构造函数构造一个类Triangle,该类实现三角形的基本操作
小糊涂仙yy1年前1
mm的挽歌 共回答了15个问题 | 采纳率93.3%
class Triangle{ public: Triangle(); ~ Triangle(); private: float angle1, angle2, angle3; float length1,length2,length3;};
英语翻译The triangle also deals with the love represented in the
英语翻译
The triangle also deals with the love represented in the mother,father,child union as well as the holy trinity.
背景补充
:塔罗牌中各种符号形象包含的意思,这里这段话是用来解释三角符号的含义的
绝色倾城韩承勋1年前1
西红柿与小白菜 共回答了20个问题 | 采纳率85%
三角符号涉及到“三位一体”这个概念(三位一体即圣父、圣灵、圣子间的关系),同时也表示母亲、父亲、孩子间的纽带关系.
(汗,我看见了Holy Trinity,“三位一体”,就这么翻了,不知道对不对啊- -^ Forgive me,我的英语水平只能到这儿了.)
triangle的同类词是什么?
eda_yll1年前1
yabin62 共回答了13个问题 | 采纳率92.3%
这是三角形的意思.同类就是长方形(rectangle)正方形(square)圆形(Sperry)
英语翻译翻译软件跟复制的别发了.这个谁都会.Bizarre Love Triangle Every time I thi
英语翻译
翻译软件跟复制的别发了.
这个谁都会.
Bizarre Love Triangle
Every time I think of you
I feel shot right through with a bow of gloom
It's no problem of mine
But it's a problem I find
Living a life that I can't leave behind
There's no sense in telling me
The wisdom of a fool won't set you free
But that's the way that it goes
And it's what nobody knows
While every day my confusion grows
Every time I see you falling
I get down on my knees and pray
I'm waiting for that final moment
You'll say the words that I can't say
I feel fine and I feel good
I'm feeling like I never should
Whenever I get this way
I just don't know what to say
Why can't we be ourselves like we were yesterday
I'm not sure what this could mean
I don't think you're what you seem
I do admit to myself
That if I hurt someone else
Then I'll never see just what we're meant to be
coolcloud19821年前1
bxmdd_dd 共回答了12个问题 | 采纳率91.7%
奇异三角恋
每次我想起你
都仿如被阴郁之弓射中
这本不算我的问题
是我自寻苦恼
生活在无法割舍的过去里
说教是徒劳的
蠢人的智慧无法让我释怀
但事实就是如此
没人知道
日复一日我越发迷惘
每次我看到你倒下
我双膝跪地虔诚祈祷
我在等待那最后的时刻
你说出我无法言表的词句
我感觉很好
一种前所未有的感觉
每次置身此情此景
都无言以对
为什么我们不能回到昨天
不清楚那意味着什么
你似乎在掩饰着什么
我向自己坦白
如果伤害别人
那就永远看不到我们俩注定的未来
一道澳洲的高数题求解12 A frame in the shape of an equilateral triangle
一道澳洲的高数题求解
12 A frame in the shape of an equilateral triangle encloses three circular discs of radius length 5 cm so that the discs touch each other.Find
a) the perimeter of the smallest frame which can enclose the discs
b) the area enclosed between the discs.
就是说一个等边三角形框框里塞了三个半径为5cm的圈圈正好塞满,求
a 三角形框框的周长
b 三角形框框减去三个圈圈的面积
一道vce的高数题
别逼我做kk1年前0
共回答了个问题 | 采纳率
in triangle abc a=12 b=16 and sinB=2/3 what is the measure o
in triangle abc a=12 b=16 and sinB=2/3 what is the measure of angle A in degrees
还有:
the equation x^2+2ix-4=0 has as its toot
a根号下5-1,-根号下5-1
b根号下5-i,根号下5+i
c根号下3-i,根号下5+i
d根号下3-i,根号下3+i
e根号下3-1,-根号下3-i
薄荷1年前3
falcon8305 共回答了25个问题 | 采纳率92%
第一题:可以用正弦定理得:sinA /a=sinB /b
所以得sinA=1/2,所以angle A=30度
第二题:由韦达定理得:方程根=[(-2i±根号下(4i²+16)]/2=-i±根号下3
所以选e
希望答案能满意.
How many lines make a triangle?如何翻译?
玩世英雄1年前1
79529491 共回答了23个问题 | 采纳率87%
三角形由几条边组成?
再来条英文数学题IN TRIANGLE ABE,THE NEASURE OF ANGLE B IS THREE TIME
再来条英文数学题
IN TRIANGLE ABE,THE NEASURE OF ANGLE B IS THREE TIMES THE MEASURE OF ANGLE A.THE MEASURE OF ANGLE C IS 30度 GREATER THAN THE MEASURE OF ANGLE A.FIND THE ANGLE MEASURE.
三角形ABE.角B是3乘角A.THE MEASURE OF ANGLE C系30度,大于角A`角A是什么?
不知道这样翻译对不对``翻译有错`就帮我纠正下`谁会做这题?
列出来`要过程,结果
Dodd-Lamp1年前2
老是有人了 共回答了14个问题 | 采纳率85.7%
首先,你有拼写错误,neasure应该是measure.从题意看,三角形应该是abc,而不是abe.
角B是角A的3倍,角C比角A大30度.
角B=3*角A,角C=角A+30度
角A+角B+角C=180,
得出角A=30度.
因此角B=90度,角C=60度.
In a triangle,if measures of three&
In a triangle,if measures of three angles are x,2x and 3x respectively,then the measure of the largest angle is(  )
(英汉词典triangle:三角形,Measure:量度,the largest angle:最大角.)
A.150° B.120° C.90° D.60°
raowei1年前1
19910502 共回答了19个问题 | 采纳率94.7%
∵三角形的内角和为180°,
∴x+2x+3x=180°,
解得x=30°,
所以3x=90°.
故选C.
关于location的!the circle is to the left of the triangle我能不能说 t
关于location的!
the circle is to the left of the triangle
我能不能说 the circle is left to the triangle
俩句话一样吗?有没有语法错误?
tangwanci1年前5
liusongnian 共回答了29个问题 | 采纳率96.6%
left 表示“左边”是有固定用法的,简单来说 on the left,to the left
你想到的 is left 实际上是这样用的 Tom was left alone :tom 一个人被留下来了
left是leave的变形,be left 大多这样用
但是 原则上来讲你的用法没有语法错误
Find sin A,sec B for a right triangle if a = 1,c = 2.
杨柳又绿1年前1
穷人家的孩子啊 共回答了21个问题 | 采纳率95.2%
sinA=a/c=1/2,
secB=1/cosB=1/sinA=2.