Question

Tan 25 degree tan 5 degree tan 45 degree tan 65 degree tan 85 degree

Answer 1

Answer: The answer is 1.

Step-by-step explanation:

Tan25° tan5° tan45° tan 65° tan85°.

We know, tan(90-¢)=cot¢ (let theta=¢ 'coz in my keyboard there is no option for theta.

Now the above data can be written as tan25° tan(90-5) tan45° tan (90-65) tan85°.

tan25° cot85° cot25° tan85°. (Tan45°=1).

Now we know, tan¢ × cot ¢ = 1.

So, (tan25° cot 25°) (tan85° cot85°)=1×1=1.

Ask any doubt in the commemt section.

Thank you.