Answer:
sin²x = (1 - cos2x)/2 ⇒ proved down
Step-by-step explanation:
∵ sin²x = (sinx)(sinx) ⇒ add and subtract (cosx)(cosx)
(sinx)(sinx) + (cosx)(cosx) - (cosx)(cosx)
∵ (cosx)(cosx) - (sinx)(sinx) = cos(x + x) = cos2x
∴ - cos2x + cos²x = -cos2x + (1 - sin²x)
∴ 1 - cos2x - sin²x = (1 - cos2x)/2 ⇒ equality of the two sides
∴ (1 - cos2x) - 1/2(1 - cos2x) = sin²x
∴ 1/2(1 - cos2x) = sin²x
∴ sin²x = (1 - cos2x)/2
Answer: 4
Step-by-step explanation:
94,172
ten thousands, thousands, hundreds, tens, ones
According to the list of places, 4 is the thousand place in 94,172.
Hope this helps!! :)
Please let me know if you have any question
Answer:
229.7125
Step-by-step explanation:
Answer:
A. March
Step-by-step explanation:
You can tell by subtracting the tallest bar in the month from the shorter one, and seeing which number is bigger out of all of them.
Hope this helped :)
She probably asked you if you passed gas because she smelled something that stink and thought they since u were clos3r to her that it was you. she could hav3 done it, or another student, it all depends. this question was do funny lol. and sh3 whispered it becaus3 she didnt want to possibly embarrass u. anyways ciao
