Inverse Trig Question (1 Viewer)

rand_althor · Jun 17, 2015

Hey could someone please help with the following?
$\textup{For the domain }-1\leq x\leq1\textup{, show that }\cos(\sin^{-1}(x))=\sqrt{1-x^2}$ ,

and also:

For 14i., what exactly is the question asking me to do?

VBN2470 · Jun 17, 2015

Let $$\alpha = \sin^{-1}x$$ and draw a right-angled triangled to show that $$\sin{\alpha}=\sqrt{1-x^2}$$ .

For 14 (i), again let $$\alpha = \sin^{-1}x$$ and use properties of a right angled trangled to find the value of the given expression. (it's the same answer, but instead with a completely geometrical approach i.e. no calculus differentation etc.)

Inverse Trig Question (1 Viewer)

rand_althor

Active Member

VBN2470

Well-Known Member

Users Who Are Viewing This Thread (Users: 0, Guests: 1)