Prove this:cot 75°+cot15°=4

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asked Feb 5, 2022 117k views

1 Answer

Sbanders · Answer 1 · 2022-02-10T15:02:51+0000

Answer:

Split 75 into two angles where the values of the six trigonometric functions are known. Apply the sum of angles identity. The exact value of cot(30) is √3 .

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Prove this:cot 75°+cot15°=4

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Prove this:cot 75°+cot15°=4