Using simpler trigonometric identities, the given identity was proven below.
<h3>
How to solve the trigonometric identity?</h3>
Remember that:

Then the identity can be rewritten as:

Now we can multiply both sides by cos⁴(x) to get:

Now we can use the identity:
sin²(x) + cos²(x) = 1

Thus, the identity was proven.
If you want to learn more about trigonometric identities:
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Answer:
20
Step-by-step explanation:
Answer:
1,2,3,4,5,6,7,8,9,10,11
Step-by-step explanation:
plato
First 3/8, second 2/3, and third 19/24