The <span>initial value is 65 since that is the y intersept.</span>
<span>exact value of sin 157.5 without using a calculator
sin(157.5)=sin(315/2)
Identity: sin(x/2)=±√[(1-cosx)/2]
select positive identity since 175 is in the 2nd quadrant where sin>0
sin(315/2)=√[(1-cos315)/2]
cos 315=cos45 in quadrant IV=√2/2
sin(315/2)=√[(1-√2/2)/2]=√[(2-√2)/4]=√(2-√2)/2
sin(157.5)=√(2-√2)/2
check using calculator:
sin157.5º≈0.382...
√(2-√2)/2≈0.382...</span>
In order to find this, you need to find the difference between the price. Take 2.89 and subtract it by 2.82. You should now have .07. Next, take the .07 and divide by the original number(2.89). Your answer is .02422, or 2.4%
What kind of sheet is the sheet that she wants to buy?
