Cos (B+C - A) + cos (C+ A-B) + cos( A+B+C)
= 1 + 4 cos A. cos B. cos C....
![subject](/tpl/images/cats/mat.png)
Mathematics, 24.03.2021 20:00 jack1043
Cos (B+C - A) + cos (C+ A-B) + cos( A+B+C)
= 1 + 4 cos A. cos B. cos C.
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 17:00
Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:00
1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 22:30
How many times larger is 6 × 10^12 than 2 × 10^7? a. 30,000 b. 3,000 c. 3,000,000 d. 300,000
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:20
8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?
Answers: 3
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2020 05:57
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2020 05:57
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/geografiya.png)
Geography, 26.05.2020 05:57
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2020 05:57
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2020 05:57
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2020 05:57
![question](/tpl/images/cats/istoriya.png)
History, 26.05.2020 05:57
![question](/tpl/images/cats/mat.png)
Mathematics, 26.05.2020 05:57
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/es.png)
Spanish, 26.05.2020 05:57
![question](/tpl/images/cats/en.png)
English, 26.05.2020 05:57