If tan x=3/4 and π

Question

If tan x=3/4 and π<x<3π/2 , find
(a) sin2x ,(b) cos2x , (c) tan2x
(d) sin( x/2 )  
(e) cos ( x/2)
(f) tan(x/2) If tan x=3/4 and π<x<3π/2 , find
(a) sin2x ,(b) cos2x , (c) tan2x
(d) sin( x/2 )  
(e) cos ( x/2)
(f) tan(x/2) @Mathematics

.sam. · Answer

Find x then use x on the questions

.sam. · Answer

$$\tan x=3/4 \ \  x=\tan^{-1}(3/4)$$
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.sam. · Answer

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

.sam. · Answer

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

.sam. · Answer

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

anonymous · Answer

$$ \sin{2x} = 2	an{x}\cos^2{x}$$ 
$$ \cos{2x} = \cos^2{x}(1 - 	an^2{x}) $$ 

etc...

anonymous · Answer

Etc..... ;)

anonymous · Answer

nah

anonymous · Answer

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