Question

Tan 10 . tan 20 . tan 30 . tan 40 ……………………… tan 890 = 1​

Answer 1

tan 45 is1 and other terms are cut by end term to take reciprocal cot

Answer 2

Answer:

bro

Step-by-step explanation:

look i will only tell you the method

first the last is tan40 ok

now there is a something mistake in you question that is here tan89 not tan890 ok

now you know that tan(90 - A) = cot A

use your brain and try to find out by tan(90 - A) = cot A ok

do it