Help! (1 Viewer)

[edu89]

Guys can anyone do this with step-by-step

Prove

 

[Drongoski]

same as proving: sin(cos^-1(x)) = sqrt(1-x²)

Draw a right-angled triangle with hypotenuse = 1, one angle @ so that wrt this angle, the base is x and therefore the opp side by Pythag theorem = sqrt(1 - x²)

Then LHS = sin @ = opp/hyp = sqrt(1 - x²)/1 = sqrt(1 - x²)

 

[Gussy Booo]

I don't undertand how you worked with the LHS of the question.

sin(cos^-1(x)).......start from there please.

 

[kaz1]

I don't undertand how you worked with the LHS of the question.

sin(cos^-1(x)).......start from there please.

You can't do it algebraically, you have to do it using the method Dragoski stated.

 

[Thecorey0]

Should be right.

 

[Gussy Booo]

I seeeee ! Cooool