How to find the length of the other side of a right triangle As shown in the picture Find the length of the red line A right triangle with a side length of 4251.325 and an angle of 9.46 ° is known How to make the other side grow

How to find the length of the other side of a right triangle As shown in the picture Find the length of the red line A right triangle with a side length of 4251.325 and an angle of 9.46 ° is known How to make the other side grow

The length of red line = 4251.325 / cos9.46 ° = 4257.203

Given the edge and angle of a right triangle, how to find the diagonal edge
It is known that the critical length of a true angle triangle is 2.2, and the diagonal angle of the diagonal side is 31 degrees. What are the lengths of the hypotenuse and the diagonal side? Please write down the detailed calculation formula,

Sin = opposite / hypotenuse
Cos = adjacent / hypotenuse
Tan = opposite / adjacent
Hypotenuse = 2.2/cos 31 ° ≈ 2.567
Opposite side = 2.2 · Tan 31 ° 1.328

Given the two sides of a right triangle, find the number of diagonal angles of the two sides

Let two right angle sides be a and B respectively
Then, the diagonal of a is a = arctana / b
The diagonal of B is: B = arctanb / A

The first lesson from BaiCaoYuan to Sanwei bookstore, 2012 edition

From BaiCaoYuan to Sanwei bookstore, selected from Zhaohuaxishi (complete works of Lu Xun, Volume 2, people's Literature Press, 1981)
Zhaohuaxishi is the only collection of essays about memories written by Lu Xun. It was originally called "reminiscence of old things" and has always been highly praised. The author said that these articles are "reminiscent essays" copied from memory. This book is the collection of ten essays about memories written by Lu Xun in 1926
"From BaiCaoYuan to Sanwei bookstore" is included as the sixth lesson of the seventh grade volume II of Jiangsu Education Press and the first lesson of the seventh grade volume II of people's education press
"From BaiCaoYuan to Sanwei bookstore" was included as the first lesson of the seventh grade volume II of pep
Now, chaohuaxishi has become one of the famous Chinese books in the second grade of the people's education press, which enables more young people to share Lu Xun's "warm memories and rational criticism". In general, chaohuaxishi describes some fragments of his life in his youth and even before and after he went to Japan, showing the world and folk culture at that time, It reveals Lu Xun's deep observation of the society and his sincere feelings for his family, teachers and friends. The narration is kind and touching, and organically mixed with a lot of description, lyricism and comments. The style is beautiful and fresh, which can be called the highest level of recall prose in the history of modern literature

Least common multiple of 12 and 8 and 16

The ratio of 28 to 42 is equal to the ratio of X to 0.8

28:42=x：0.8
42x=28×0.8
x=8/15
If you understand and solve your problem,

Given the rational number A.B.C, satisfying ABC > 0, a + B + C > 0, find the value of a / A + B / B + C / C
Please hurry

When ABC is all positive, a / A + B / B + C / C = 3
When only one number of ABC is negative and the rest are positive, a / A + B / B + C / C = 1

Ask elder brother elder sister help: chicken has 16, duck has 12
1: How many percent more chicken than duck?

1: How many percent more chicken than duck?
（16-12）÷12
＝4÷12
＝33.33％
2: How much less is duck than chicken?
（16-12）÷16
＝4÷16
＝25％

The range of function f (x) = (4x + 3) / (X & sup2; + 1) is

∵y＝（4x＋3）÷（x²＋1）
∴yx²+y=4x+3
∴yx²-4x+y-3=0
From Δ > = 0, 16-4y (Y-3) > = 0
Get - 1=

Starting from a point O, the sea lion climbs back and forth in a straight line, + 4, - 3, + 6, - 8, + 5, - 10, + 9, - 3
(1) Can sea lions finally return to their starting point?
(2) How far is the sea lion from the starting point o?
(3) In the process of crawling, when the sea lion crawls 6 meters, the trainer rewards the sea lion with a small fish. How many small fish will the sea lion get?

1）（+4）+（-3）+（+6）+（-8）+（+5）+（-10）+（+9）+（-3）=0
So finally back to the origin
2) Up to 7 meters
3) 4 + 3 + 6 + 8 + 5 + 10 + 9 + 3 = 48m
48 / 6 = 8
A total of 8 small fish were obtained