Question

HELP! I HAVE 20 MIN TO FINISH MY WORKSHEET!
The equation sinx = sqrt2/2 is an identity.
True or False?
I say false....anyone know if i'm right?

Answer 1

WILL FAN AND MEDAL!

Answer 2

what does it mean by identity?

Answer 3

In trig...it wants to know if its a Trigonometric Identity.

Answer 4

whether or not it can be proven true

Answer 5

and i dont know how to prove it true or false :(

Answer 6

well dunno if this helps but sqrt of 2 is 1.41421356237

Answer 7

i dont know either....it's multiple choice between true and false...ugh! Pre-calc sucks!!

Answer 8

its false

Answer 9

how do you know?

Answer 10

2 = 2 is an identity since it's always true

x = x is also an identity (domain: All real numbers)

tan(x) = tan(x) is an identity (domain: all real numbers but x can't equal multiples of pi/2)

Answer 11

it's only true for specific x values but not all x values

it needs to be a true equation for every value in the domain for it to be an identity

Answer 12

k...well i chose false...so when im done...i will let you kow what i get...if it is right i will fan and medal :) thx

Answer 13

np :D