Verify the identity.
cos (x - y) - cos (x + y) = 2 sin x sin y...
![subject](/tpl/images/cats/mat.png)
Mathematics, 14.01.2021 20:30 sophie5064
Verify the identity.
cos (x - y) - cos (x + y) = 2 sin x sin y
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:00
How does a low unemployment rate affect a nation's economy? a. the nation has a higher number of productive resources. b. the nation can spend more money on for unemployed people. c. the nation can save money by paying lower salaries to a large workforce. reset
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:00
Find the distance between the pair of points a(-1,8) and b(-8,4)
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:10
A, at (-2, 4), is 6 .of a'? (-8, 4) (-8, -2) (-2, -2) (-2, 4) b, at (-4, -7), isy-.of b'? (-4, 7) (4, -7) (4, 7) (-4, -7)
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 02:30
Use stokes' theorem to evaluate c f · dr where c is oriented counterclockwise as viewed from above. f(x, y, z) = xyi + 5zj + 7yk, c is the curve of intersection of the plane x + z = 8 and the cylinder x2 + y2 = 81.
Answers: 2
You know the right answer?
Questions
![question](/tpl/images/cats/himiya.png)
Chemistry, 11.03.2021 01:00
![question](/tpl/images/cats/ekonomika.png)
Business, 11.03.2021 01:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.03.2021 01:00
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.03.2021 01:00
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 11.03.2021 01:00
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.03.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 11.03.2021 01:00
![question](/tpl/images/cats/fizika.png)
Physics, 11.03.2021 01:00
![question](/tpl/images/cats/istoriya.png)
History, 11.03.2021 01:00
![question](/tpl/images/cats/mat.png)
Mathematics, 11.03.2021 01:00
![question](/tpl/images/cats/himiya.png)
Chemistry, 11.03.2021 01:00
![question](/tpl/images/cats/mat.png)