Find: sin(arccos(3/5))
Find the exact value of csc105 degrees
Simplify: sin (x+y) - sin(x-y)
Prove that: sin2x/cotx = 1-cos2x
Find the exact value of sin(x+ pi/3)
I know thats a lot but any help would be amazing!!! I'm awful at this!!
Find: sin(arccos(3/5))
Find the exact value of csc105 degrees
Simplify: sin (x+y) - sin(x-y)
Prove that: sin2x/cotx = 1-cos2x
Find the exact value of sin(x+ pi/3)
I know thats a lot but any help would be amazing!!! I'm awful at this!!
Hello,
$\displaystyle \sin(\arccos(3/5))=\pm \sqrt{1-(3/5)^2}$ (see where arccos 3/5 lies and conclude about the sign of the sine)
Dunno.. have to find out what csc is...Find the exact value of csc105 degrees
$\displaystyle \sin(x+y)=\sin(x)\cos(y)+\cos(x)\sin(y)$Simplify: sin (x+y) - sin(x-y)
$\displaystyle \sin(x-y)=\sin(x)\cos(-y)+\cos(x)\sin(-y)$
$\displaystyle \cot x=\frac{\cos x}{\sin x}$Prove that: sin2x/cotx = 1-cos2x
$\displaystyle \sin 2x=2 \cos x \sin x$
$\displaystyle \Longrightarrow \frac{\sin 2x}{cot x}=2 \sin^2(x)=\dots$
Use the formula $\displaystyle \sin(x+y)=\sin(x)\cos(y)+\cos(x)\sin(y)$Find the exact value of sin(x+ pi/3)
[tex]\pi[/tex]btw how do you make the pi symbol on here??j