Question

If tan x=3/4 and π 12 years ago

Answer 1

Find x then use x on the questions

Answer 2

\[\tan x=3/4 \\ \\ x=\tan^{-1}(3/4)\]

Answer 3

You'll get
x=36.86
180+x=216.86

Answer 4

but since we have restrictions π<x<3π/2,
x will be 216.86 or 3.78radians

Answer 5

Then use x for
(a) sin2x ,(b) cos2x , (c) tan2x
(d) sin( x/2 )
(e) cos ( x/2)
by substitution

Answer 6

$$ \sin{2x} = 2\tan{x}\cos^2{x}$$
$$ \cos{2x} = \cos^2{x}(1 - \tan^2{x}) $$

etc...

Answer 7

Etc..... ;)

Answer 8

nah