I'm having a hard time understanding how to verify trig functions using trig identities.

can someone walk me through how to verify this equation? thanks

(cscθ)(tanθ) = secθ

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- Feb 6th 2011, 12:59 PMTacticalProHelp me with trig functions!!
I'm having a hard time understanding how to verify trig functions using trig identities.

can someone walk me through how to verify this equation? thanks

(cscθ)(tanθ) = secθ - Feb 6th 2011, 01:04 PMskeeter
- Feb 6th 2011, 01:06 PMhomeylova223
It is like this

(1/sinx)(sinx/cosx)= sec

(1/cosx)= secx

secx=secx - Feb 6th 2011, 01:07 PMpickslides
I can help

- Feb 6th 2011, 01:26 PMTacticalPro
okay thanks! what about this problem?

csc[(pi/2)-θ] / tan(-θ) = -cscθ

i reduced that down to

secθ / tanθ = cscθ

and i'm stuck. can anyone help me with what I do next? thanks - Feb 6th 2011, 01:32 PMArchie Meade
- Feb 6th 2011, 01:45 PMTacticalPro
- Feb 6th 2011, 02:02 PMArchie Meade
No, I didn't forget.

The minus sign only comes at the last step.

I'm working from the left and evaluating that.

Now, what is - Feb 6th 2011, 03:19 PMTacticalPro
- Feb 6th 2011, 03:21 PMdwsmith
- Feb 6th 2011, 03:24 PMTacticalPro
ok so now i'm left with:

1/-sinθ = -cscθ

cscθ = cscθ - Feb 6th 2011, 03:26 PMdwsmith
- Feb 6th 2011, 04:07 PMArchie Meade
You're probably overanalysing the two sides being equal.

You only need evaluate the left hand side to see what it eventually yields...