What is the perimeter of the triangle below, to the nearest tenth of an inch, if each square on the grid measures 8 inches on each side?

Find an equation of the plane. The plane through the points (2, 1, 2), (3, −8, 6), and (−2, −3, 1)

Find the point on the line $y=5x+3$ that is closet to the origin.

Match each of the trigonometric expressions below with the equivalent non-trigonometric function from the following list. Enter the appropriate letter(A,B, C, D or E)in each blank
A . ${\displaystyle \tan \left(\arcsin \left(\frac{x}{8}\right)\right)}$
B . ${\displaystyle \cos \left(ar\sin \left(\frac{x}{8}\right)\right)}$
C. ${\displaystyle \left(\frac{1}{2}\right)\sin \left(2\arcsin \left(\frac{x}{8}\right)\right)}$
D. ${\displaystyle \sin \left(\arctan \left(\frac{x}{8}\right)\right)}$
E. ${\displaystyle \cos \left(\arctan \left(\frac{x}{8}\right)\right)}$

How do you solve ${\displaystyle {\sin }^{2}x-{\cos }^{2}x=0}$ for x in the interval ${\displaystyle [0,2\pi )}$ ?

In triangle ABC, a=5, ${\displaystyle M<B=92°}$, c=3. Find b.

A plane, diving with constant speed at an angle of ${\displaystyle {53.0}^{\circ }}$ with the vertical, releases a projectile at an altitude of 730 m. The projectile hits the ground 5.00 s after release.
a) What is the speed of the plane?
b) How far does the projectile travel horizontally during its flight? What are the
c) horizontal and (d) vertical components of its velocity just before striking the ground?

Find the value of x
${\displaystyle \cos 35\cdot =\frac{21}{x}}$