samantha33 samantha33

10-08-2016
Mathematics

contestada

cos (a-b) - cos (a+b) = 2 sin a sin b

Respuesta :

Panoyin Panoyin

10-08-2016

cos(a - b) - cos(a + b) = 2sin(a)sin(b)
[cos(a)cos(b) + sin(a)sin(b)] - [cos(a)cos(b) - sin(a)sin(b)] = 2sin(a)sin(b)
[cos(a)cos(b) - cos(a)cos(b)] + [sin(a)sin(b) + sin(a)sin(b)] = 2sin(a)sin(b)
2sin(a)sin(b) = 2sin(a)sin(b)

Answer Link

Otras preguntas

Raina is going to rent a truck for one day. There are two companies she can choose from, and they have the following prices. Company A charges and allows unlimi

The interested students paid another visit to the museum. Adjective: Modifed Noun/Pronoun:

Which type of market is the one in which a person buys their favorite breakfast sandwich at a fast-food drive thru? A) Product market B) Factor market C) Financ

Please do this I just had a math tutor, I have a huge amount of Algebra homework I still need to finish and I have to study for the Spanish 4 unit test tomorrow

Find the error with subject-verb agreement. Select the incorrect verb and type it correctly. In her book Silent Spring writer and environmentalist Rachel Carson

Please answer a simple A B or C. Bianca has recently begun her first job as a pharmacy technician. One morning, she is tasked with filling forty-five different

If a geologist found preserved mud cracks, he or she could conclude that the environment in which they formed ________.

6 acter Test at FR BEST SSD GUEST GEST SESSION Charmaine observes the number of times the 5:00 p.m. train is early, late, and on time. She records her observati

What must organisms do in order to survive in the world? Check all that apply.

4. What did the Sedition Act make it illegal to do? A. form a political party B. criticize the government C. emigrate to the United States D. start a newspaper