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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Because vertical angles always equal each other. linear pairs always equals 180 degrees always. hope this helps :)
Answer:
a
Step-by-step explanation:
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Answer c
Another name for the height of a pyramid is the altitude of the pyramid.
Minus 3 from the 3 and the 18