SOLUTION: Solve cos(4theta)=0

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Question 1116098: Solve cos(4theta)=0
Found 2 solutions by stanbon, ikleyn:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Solve cos(4theta)=0
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4t = arccos(0) = pi/2
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theta = pi/8
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Cheers,
Stan H.
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Answer by ikleyn(53763) About Me  (Show Source):
You can put this solution on YOUR website!
.
The other's tutor solution is INCORRECT.

For the correct solution, see at the link
https://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.1116167.html

https://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.1116167.html