chavelitam54 chavelitam54

18-03-2020
Mathematics

contestada

True or false sin x cos y=1/2(sin(x+y)+sin(x-y))

Respuesta :

ghanami ghanami

20-03-2020

Answer:

Step-by-step explanation:

hello :

sin(x+y)= sinxcosy+cosxsiny...(*)

sin(x-y)= sinxcosy-cosxsiny....(**)

add (*) and(**) : sin(x+y)+sin(x-y)= 2sinxcosy

1/2(sin(x+y)+sin(x-y)) = sinxcosy......true

Answer Link

Otras preguntas

SOMEONE PLEASE HELP ME ASAP PLEASE!!!!

identify the law illustrated by:20x +50 is the same as 50+20x

Calculate the pH of a buffer that is prepared by mixing 25.0 mL of 0.300 M methylamine (CH3NH2) and 0.405 g of methylammonium chloride with water to make 500.0

A 35 g steel ball is held by a ceiling-mounted electromagnet 4.0 m above the floor. A compressed-air cannon sits on the floor, 4.4 m to one side of the point di

4n - 2n =4 solve for n

me pueden ayudar ????

Greenburg's Ten Building Blocks of Thinking can help a student get a main idea or identify a problem True False

A heavy boy and a lightweight girl are balanced on a massless seesaw. If they both move forward so that they are one-half their original distance from the pivot

How does oceanic crust move along mid-ocean ridges?

A 680 m wire is cut into three pieces. The second piece is 4 times as long as the first. The third piece is 3 times as long as the second. How long is each pie