Question

find sec[sin^-1(3/5)] in radians

Answer 1

sec=1/cos
sin^2 x+cos^2 x=1

Answer 2

Ok, but I do not see where that is taking me.

Answer 3

oh, that's an arcsine isn't it...

Answer 4

yes.

Answer 5

this is cheating basically, but wiki lists some arctrig function identities...

Answer 6

I'll check it out!

Answer 7

http://en.wikipedia.org/wiki/List_of_trigonometric_identities#Inverse_trigonometric_functions

Answer 8

so you're taking the cosine of an arcsine and finding the reciprocal

Answer 9

Indeed

Answer 10

=\(\Huge\frac{1}{\sqrt{1-x^2}}\) according to wikipedia

Answer 11

1/((1-(3/5)^2)^-1)

Answer 12

^-2 instead of ^-1

Answer 13

yeh I guess

Answer 14

1.25

Answer 15

and 5pi/4?

Answer 16

shrugs, use wolfram alpha to check your work hehe

Answer 17

lol

Answer 18

thanks