emilyburns03 emilyburns03
  • 03-09-2020
  • Mathematics
contestada

sin 20.sin 10 as sum or difference

Respuesta :

jimrgrant1 jimrgrant1
  • 03-09-2020

Answer:

see explanation

Step-by-step explanation:

The difference identity for the product is

sinxsiny = [tex]\frac{1}{2}[/tex] [ cos(x - y) - cos(x + y) ], thus

sin20sin10

= [tex]\frac{1}{2}[/tex] [ cos(20 - 10) - cos(20 + 10) ]

= [tex]\frac{1}{2}[/tex] ( cos10 - cos30 )

Answer Link

Otras preguntas

Identify each of the cell structures indicated in Figure 7–7 and explain its role in the cell. Be sure to indicate the letter that corresponds to each structure
what is 5\18 equal to
How many times can 3 go into 400
Which of the following events influenced the start of realism in american literature. The Crimean war The Franco-Prussian The US civil war The Spanish American
The time was in the 1720s. Colonists were living in South Carolina. They petitioned England. They wanted forts built to their south. What is the best way to com
Many times, the molecules join to form long chains with what kind of backbone?
This describes those things you really must have and those thing you really must do
How can I solve for y 13=1/6y+2x
discuss two ways that all cells are alike?
When dividing 878 by 31, a student finds a quotient of 28 with a remainder of 11. Check the students work, and use the check to find the error in the