How to calculate the composition of forces

1. By looking up the table! In fact, you have to remember these special angles when you study physics. The physical angle is 30 °， forty-five °， fifty-three °， sixty °

2. The combination of forces is actually vector addition
because force is a kind of vector in space
according to the parallelogram rule or triangle rule of vector addition
in the coordinate system, it can be calculated by coordinates, which is the decomposition calculation of forces, which is exactly the same as the calculation of vectors in mathematics

3. A2 = B2 + C2-2 * BC * cosa (the first three 2 are squares) in the deformed triangle where your formula is cosine formula, a is the angle, a is the length of the opposite side of angle a, and a, B, C are the length of three sides
the article may be better for you

4. If there are any two forces F1 and F2, the angle between F1 and F2 is: α Then their resultant force is:
√ the square of F1 + the square of F2 + 2F1 * F2 * cos α

5. The composition and decomposition of forces use the law of parallelogram. The composition of forces is to regard two forces as two sides of parallelogram and draw a parallelogram. Its diagonal is the resultant force of two forces, and the reverse is the decomposition of forces. Do a few more questions will be skilled, in fact, it is not difficult

6. How much money do you remit? If the money is large, it will be regulated by law, but the chance of winning is almost zero< It is well documented that you remit the money to his account. You can seal his account. If TA says that he has given you the game currency, what evidence does he have to prove that he is lying
it's better to buy and sell online transactions through regular channels, but also have a long mind, and don't let yourself suffer losses by trying to be cheap for a while.

7. Bbt Mint is a typical pyramid scheme, which has been exposed by mainstream media such as bitcoin home

when you play BBT, please consider the following questions carefully:

1] does anyone know the founder and operation team of BBT
2] does the BBT system have any physical or organizational support or endorsement
3] is BBT a kind of open source digital currency? Is the source code public
4] is BBT a spontaneous market like bitcoin, and is it decentralized
5] why isn't BBT the mainstream Shanzhai coin trading platform at home and abroad

if you are interested in virtual currency, it is recommended to play with cryptocurrency with high transparency, such as bitcoin, Laite coin, Fuyuan coin and dogcoin.

8. Currency exchange
1 Philippine Peso = 0.1306 RMB
1 RMB = 7.6564 Philippine Peso

5000 Philippine Peso = 653.0460 RMB
the above is the exchange rate information of Bank of China, for reference only

9. Suzhou Metro Line 1 will be officially opened to traffic on April 28, 2012! Welcome to Suzhou. You can get off at Linton Road Station (east of Guanqian Street) or leqiao station (West of Guanqian Street)