2 part question. I keep getting 57.54 degrees but it's not correct. Part 1:

2 part question. I only need help with part 2. I keep getting 57.54 degrees but it's not correct.

Part 1:

Unpolarized white light is incident on a po- larizer and then falls on an analyzer whose TA (Transmission Axis) makes an angle of θ = 16.8◦ with the polarizer.

What is the fraction of the original light transmitted through both the polarizer and analyzer?

Answer: 0.45823

Part 2:

If the analyzer is rotated until the transmit- ted intensity is 28.8 percent of the original light intensity, what is the new angle of the analyzer with respect to the polarizer?

Answer in units of ◦.