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

How can b^2+9b+14 be re-written?1) (b+7) (b-7)2) (b-7) (b-2)3) (b+7) (b-2)4) (b+7) (b+2)

if f(x)=|3x-4|+2, find f (-10)

Wages. JoAnn works in the publicity office at the state university. She is paid $10 an hour for the first 35 hours she works each week and $15 an hour for every

What challenges did the californios face?

What two factors determine the state of rocks and metals Inside the earth?

The following statements about carbon dioxide are true EXCEPT a. It can be prepared by the action of acid on CaCO₃ b. It is used in fire extinguishers c. It d

Is STM semantically or acoustically encoded??

Identify the turning point of the function f(x)=x^2-2x+8 by writing its equation in vertex form. Show work

what are some reasons for limiting authority

if f(x)=|3x-4|+2, find f (-10)