how can i evaluate trig functions? [Archive]

preet

Dec12-04, 05:51 AM

however stupid it sounds, I dont know how to evaluate trig functions with my calculator... ex.

d(t) =0.5cos2t

how do i solve for t (lets say t is 2). Thanks in advance.

Tide

Dec12-04, 05:57 AM

I'm not sure what you are asking. It would appear that you don't want to "solve" for t but you want to determine the values of d(t) for various values of t.

If that's the case, enter a value of t into your calculator, mutiply it by 2, press the [COS] button and multiply the result by 0.5. That will give you the value of d for the specifice value of t you entered. Repeat for different values of t as often as needed.

If you actually meant "solve for t" then you have a real problem with your standard calculator!