Question

Evaluate:Cot75°×Cot30°×Cot15°×Tan77°×Tan13°

I need the answer fast guys!!plsss

Answer 1

Answer:

$\cot(75) \times \cot(30) \times \cot(15) \times \tan(77) \times \tan(13) \\ = \cot(75) \times \cot(30) \times \ \tan(90 - 15) \times \tan(77) \times \cot(90 - 13) \\ = \cot(75) \times \cot(30) \times \tan(75) \times \tan(77) \times \cot(77) \\ = 1 \times 1 \times \cot(30) \\ = \cot(30 ) = \sqrt{3}$

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Answer 2

here is ur ansss

cot⁡(75)×cot⁡(30)×cot⁡(15)×tan⁡(77)×tan⁡(13)=cot⁡(75)×cot⁡(30)× tan⁡(90−15)×tan⁡(77)×cot⁡(90−13)=cot⁡(75)×cot⁡(30)×tan⁡(75)×tan⁡(77)×cot⁡(77)=1×1×cot⁡(30)=cot⁡(30)=3\begin{lgathered}\cot(75) \times \cot(30) \times \cot(15) \times \tan(77) \times \tan(13) \\ = \cot(75) \times \cot(30) \times \ \tan(90 - 15) \times \tan(77) \times \cot(90 - 13) \\ = \cot(75) \times \cot(30) \times \tan(75) \times \tan(77) \times \cot(77) \\ = 1 \times 1 \times \cot(30) \\ = \cot(30 ) = \sqrt{3}\end{lgathered}

cot(75)×cot(30)×cot(15)×tan(77)×tan(13)

=cot(75)×cot(30)× tan(90−15)×tan(77)×cot(90−13)

=cot(75)×cot(30)×tan(75)×tan(77)×cot(77)

=1×1×cot(30)

=cot(30)=

_/3

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