Asked by makaela
inverse tan x = inverse cos 4/5
Answers
Answered by
Reiny
inverse cos 4/5
= cos^-1 (4/5)
= .6435..
then tan^-1 x = .6435...
x = tan .6435...
= .75
or, make a diagram with sides 3-4-5
then, if tan^-1 x = cos^-1 (4/5)
then x = tan (cos^-1(4/5) )
= 3/4 or .75
= cos^-1 (4/5)
= .6435..
then tan^-1 x = .6435...
x = tan .6435...
= .75
or, make a diagram with sides 3-4-5
then, if tan^-1 x = cos^-1 (4/5)
then x = tan (cos^-1(4/5) )
= 3/4 or .75
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