The same value as cosα
cosα=sin(90-α) and vice versa
sinα=cos(90-α)
The store which offers the greater discount is store B.
<h3>Discount</h3>
Store A:
First week = 10%
= 10/100
= 0.1
Second week = 20%
= 20/100
= 0.2
Total discount = (0.1 + 0.2) / 2
= 0.15
Store B:
25%
= 25/100
= 0.25
Therefore, the store which offers the greater discount is store B.
Learn more about discount:
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1 16oz = $1
40=16*4
1 40oz = $4
8*$4 = $32
In order to do these, simply translate the sentence mathematically.
1) x-15=7
2)3x+4=13
3)x+x+2+x+4=51
Hope this helped :D. Comment below if you have any questions!