<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>
Answer:
Let's make "b" the amount in the account.
A withdrawal means a reduction in the balance. So we have
b - 40
Oh round that up to three, since 6 is above 5. BRAINLIEST ANSWER PLEASEEEE
The answer is
64m^2 + 112m + 49
Answer:
x=3.4
Step-by-step explanation:
Move all the terms that don't contain X, to the right side and then solve for X.
