Question

true or false question,
equation posted in reply attachment

Answer 1

@Mendicant_Bias

Answer 2

I'm sure you can solve this using some trig formula, but if you can't recall it, just plug in a value for x and solve. If the answers are equal, then true, else, false.

Answer 3

I think it should be true by plugging in a value

Answer 4

@mathbrz @Mendicant_Bias

Answer 5

Plug in pi/2, and tell me what you get.

Answer 6

^

Answer 7

its false

Answer 8

?

Answer 9

anyone there?

Answer 10

(...Plug in pi/2 *into the expression*, not into the answer box, and tell me what you get.)

Answer 11

Or better yet, use any reference source on the web. http://www.sosmath.com/trig/Trig5/trig5/trig5.html