Math, asked by shreedharzaveri, 1 year ago

If cosA =12/13, then find the value of tanA

Answers

Answered by SAKNA1
1

hey sakna here


cosA = 12/13


bt we know that  

cos A                        = Base / hypotenuse

base                          =  12

hypotenuse               = 13

bt tan A                      =  Perpendicular / base

so

perpendicular            = 5


tan A                           = 5/12

Answered by vaibhu1985
1
cos A=b/h
where b is base and h is hypotenuse
so b/h=12/13
so let b =12x and h= 13x
we take them as x and not simply 12 or 13 as they could have been divided and then would have come 12 and 13
in a right angle triangle
acc to pyth theorem
h^2=p^2+b^2
(13x)^2=p^2+(12x)^2
25x^2=p^2
p=5
so tan a =p/b
tana =5/12
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