Question

If 0 E (0,
ZT
16
(tan 0 + 1)(1+tan 40) = 2 and
A, B, y are real and positive such that
a + B + y = 10 0 then
(cot a +cot B + cot y) (cot a cot Boty​

Answer 1

Answer:

Step-by-step explanation:

tan1 * tan89 = 1

tan2 * tan88 = 1

tan3 * tan 87 = 1

and so on intill

tan44 * tan 46 = 1

now

tan1 * tan2 * ...* tan45 * ... * tan88 * tan89 = tan45 = 1

Explanation: