# I Question ,trigonometric identities equation and functions ?

1. Jul 12, 2016

### awholenumber

what is the difference between trigonometric identities , equations and functions ...?

is it possible to apply some numerical method on a trigonometric function ??

i was looking for an example where numerical methods could be applied on a trigonometric function ...

i am not sure what you could achieve with that at this point of time...

also ... is this a trigonometric function ??

f(x) = A sin (kx-wt)

??

2. Jul 12, 2016

### Let'sthink

Identities like sin^theta + cos^2 theta = 1 are true for all values of theta. Equations like sin theta = cos (theta +x) is true for some value or values of theta only. Any function involving trigonometric ratios of variable can be called trigonometric function. Yes I think numerical methods can be applied here. try to apply it to solve teh equation quoted in this post.

3. Jul 12, 2016

### awholenumber

thanks for that ...

i am not familiar with the numerical methods associated with trigonometry right now ...

could someone tell me few examples of it ??

4. Jul 12, 2016

### Let'sthink

just put different values of theta and take some say x = 30 degree. and check when sin theta = cos(theta+30).

5. Jul 12, 2016