Answer:
We have to prove
sin(α+β)-sin(α-β)=2 cos α sin β
We will take the left hand side to prove it equal to right hand side
So,
=sin(α+β)-sin(α-β) Eqn 1
We will use the following identities:
sin(α+β)=sin α cos β+cos α sin β
and
sin(α-β)=sin α cos β-cos α sin β
Putting the identities in eqn 1
=sin(α+β)-sin(α-β)
=[ sin α cos β+cos α sin β ]-[sin α cos β-cos α sin β ]
=sin α cos β+cos α sin β- sinα cos β+cos α sin β
sinα cosβ will be cancelled.
=cos α sin β+ cos α sin β
=2 cos α sin β
Hence,
sin(α+β)-sin(α-β)=2 cos α sin β
Answer:
<em>Total pieces sold = 78+96+40+104+77 = 395 , average pies sold per day = 395/5 = 79.</em>
Step-by-step explanation:
<em>Hope</em><em> It</em><em> Help</em>
Answer:
(x-4, y-3)
Step-by-step explanation:
so what you need to do is take the x-coordinate and subtract it by 4. Then take the y-coordinate and subtract it by 3. Then you'll have you answer, I hope this helps.
Answer:
x=3/2
y=9/2
Step-by-step explanation:
Answer:
Step-by-step explanation:
There are 2 answers.
He could go further negative which means -153 - 512 = - 665
He could go towards the plus direction which is -153 + 512 = 359 which is plus.
