91Ó°ÊÓ

What are the domain and the range of$y=secx$?

True or False:${\sin }^2\left(\mathrm{θ}\right)=1-{\cos }^2\left(\mathrm{θ}\right)$

What is the domain and the range of y = sin x ?

Find the exact value of the expression:

$\sin 195°·\cos 75°$

The distance $d$from the point $(2,-3)$to the point $(5,1)$is ______.

Find the exact value of the expression. Express angles in radians.

$se{c}^{-1}\left(\frac{2}{\sqrt{3}}\right)$

In Problems 1– 8, find the exact value of each expression. Do not use a calculator

${\sin }^{-1}1$

Solve:$3x-5=-x+1$

$\cos \left(2\mathrm{θ}\right)={\cos }^2\mathrm{θ}-$ $=$ $-1=1-$ .

Find the real solutions, if any, of the equation$3x^2+x-1=0$.