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:
Option A is correct.
The Solutions can be found for the equation 4x − 8 − 4x = 9 is, Zero
Step-by-step explanation:
Given the equation:
Like terms are those terms which have same variable to the same power.
Combine like terms;
⇒The equation does not have any solution
Therefore, the Solutions can be found for the equation 4x − 8 − 4x = 9 is, Zero
4 x 365 = 1460 cents per year. 14.60
