Hi. I've been trying to solve this trig. equation 4sin4t + 3cos4t = 0. The answer is meant to be t =

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- May 4th 2010, 10:34 AMUltraGirl[SOLVED] Trig equation - Why can't I get it right?!?
Hi. I've been trying to solve this trig. equation 4sin4t + 3cos4t = 0. The answer is meant to be t =

- May 4th 2010, 11:21 AMFailure
- May 4th 2010, 12:27 PMArchie Meade
Hi Ultragirl,

Line through origin, with slope passes through 2nd and 4th quadrants.

The angle is the acute angle the line makes with the negative x-axis in the 2nd quadrant

or with the positive x-axis in the 4th quadrant.

The angle 4t is the pair of counterclockwise angles the line with negative slope

makes with the positive x-axis.

In the 2nd quadrant...

For other solutions, add integer multiples of

In the attachment,