Question

pleeeease help me!!
tan x=7/24 , x Є [π,3π/2]
cos x =??
sin x=??

Answer 1

Do you know how to draw the reference triangle for tan(x) = 7/24 ?

Answer 2

no

Answer 3

Do you know how to find the length of the hypotenuse?

Answer 4

no x|x

Answer 5

Have you heard of the phythagorean theorem?

Answer 6

ooh yeah okay i forgot that way
sqrt{24^2+7^2}

Answer 7

Yup yup. :) So what is \[\sqrt{24^2+7^2}\]

Answer 8

sqrt{24^2+7^2} = 25
so
cos x = 24/25
sin x = 7/25

Answer 9

You got it! :D

Answer 10

thaanks a loot !!

Answer 11

but cos x = 24/25 is not in the interval .. what shall i do for that

Answer 12

@mathteacher1729