SOLUTION: Use an addition or subtraction identity to complete the simplification shown below. sin(x+pi/2)=A cos x where the, value of A is: A=

Algebra ->  Trigonometry-basics -> SOLUTION: Use an addition or subtraction identity to complete the simplification shown below. sin(x+pi/2)=A cos x where the, value of A is: A=      Log On


   



Question 827137: Use an addition or subtraction identity to complete the simplification shown below.
sin(x+pi/2)=A cos x
where the, value of A is:
A=

Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Use an addition or subtraction identity to complete the simplification shown below.
sin(x+pi/2)=A cos x
cosx=sin(π/2-x)
sin(x+π/2)=A sin(π/2-x)
x+π/2=π/2-x
2x=0
x=0
A=sin(x+π/2)/cos(x)
A=sin(π/2)/cos(0)
A=1/1=1