Answer:
orange box: 22
pink box :77z
product:22+77z
Step-by-step explanation:
you multiply
Answer:
No.
Step-by-step explanation:
No, since then it something times the bananas' value would equal the total weight. For the first two bananas, the weight is proportional, but the 0.45 * 3 = 1.35, not 1.20. Thus, it is not proportional.
Answer:
9112.5
Step-by-step explanation:
36,450 divided by 4.
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