![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 05.05.2021 15:50, BFBtrent
Prove: cos (x + y) = (cos x )(cos y ) + (sin x)(sin y) Please help need a written explain of proof
![answer](/tpl/images/cats/otvet.png)
Answers: 1
Other questions on the subject: Mathematics
![image](/tpl/images/cats/mat.png)
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:30, Katlyndavis01
What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)
Answers: 1
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:00, ElizabethF
Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?
Answers: 2
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:20, Boogates7427
Paul’s car is 18 feet long. he is making a model of his car that is 1/6 the actual size. what is the length of the model?
Answers: 1
Do you know the correct answer?
Prove: cos (x + y) = (cos x )(cos y ) + (sin x)(sin y)
Please help need a written explain of proof...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
Mathematics, 01.04.2021 17:20
![Konu](/tpl/images/cats/istoriya.png)
History, 01.04.2021 17:20
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/istoriya.png)
History, 01.04.2021 17:20
![Konu](/tpl/images/cats/mat.png)
Mathematics, 01.04.2021 17:20
![Konu](/tpl/images/cats/mat.png)
Mathematics, 01.04.2021 17:20
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 01.04.2021 17:20