Question

The value of

$\tan {45}^o\times \tan 8^o\times \tan {82}^o$ is equal to?

• A. $1$
• B. $0$
• C. $2$
• D. $3$

Answer 1

The correct option is A $1$

$\tan {45}^o\times \tan 8^o\times \tan {82}^o=1\times \tan 8^o\times \tan ({90}^o-8^o)=\tan {45}^o\times \tan 8^o\times cot{8}^o=1\times 1=1$

Therefore, Answer is $1$