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 many moles of kno3 are required to make 0.50 liters of a 2.0 m solution of kno3?
I have a Brainliest
Brianna just finished a great meal at a restaurant in Wisconsin. The sales tax in Wisconsin is 5%, and it is customary to leave a tip of 15% for the server. The
What does x equal when the problem is 1+x/3=5?
In shorthorn cattle.when a red bull (RR) is crossed with a white cow (rr),all offspring are roan----a spotted,red and white or milky red color.What genotypes ar
what is the answer i can’t figure this one out?
the ____ of the sun is the interior or center part of this star
A plate has a diameter of 14 inches. What is the best approximation for the circumference of the plate? Use 3.14 approximation pi.
How to change a subtraction problem into an addition problem
Write letter to public official