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(1 - sin^4 theta)/(cos^4 theta) = 1 + 2tan 2theta
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(1 - sin^4 theta)/(cos^4 theta) = 1 + 2tan 2theta

User Jeremy Matt
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Refer to the photo taken.
(1 - sin^4 theta)/(cos^4 theta) = 1 + 2tan 2theta-example-1
User ANTARA
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Answer:

use a^2 + b^2 formula after that use Pythagoras formula answer will come.

(1 - sin^4 theta)/(cos^4 theta) = 1 + 2tan 2theta-example-1
User Anavarroma
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