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2022-04-05

Find value of $\mathrm{tan}1\times \mathrm{tan}2\times \cdots \times \mathrm{tan}89$ . Please don't answer, but please help me to figure this out this as I am not aware of any method to calculate this. I tried it by finding value of $\mathrm{tan}\left({90}^{\circ}\right)$ , but it didn't work as $\mathrm{tan}\left({90}^{\circ}\right)$ is not-defined.

Wrastirtyzp9w

Beginner2022-04-06Added 10 answers

Hint: $\mathrm{tan}\left(x\right)\times \mathrm{tan}({90}^{\circ}-x)=\frac{\mathrm{sin}\left(x\right)}{\mathrm{cos}\left(x\right)}\times \frac{\mathrm{cos}\left(x\right)}{\mathrm{sin}\left(x\right)}=1$

Alan Bean

Beginner2022-04-07Added 10 answers

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