Question

Cos1.cos2.cos3...... Cos90
please answer in degree

Answer 1

The answer will be zero,0...

As cos 90 is 0 ..

0 into anything 0 only...

So and in degrees is cos 90°

Answer 2

Answer:

0

Step-by-step explanation:

Given equation,

$\cos 1\times \cos 2\times\cos 3...........\cos 90$

$\implies \cos 1\times\cos 2\times.\cos 3...........\cos 89.\times\cos 90$

Since, we know that,

$\cos 90 = 0$

$\implies \cos 1\times \cos 2\times\cos 3...........\cos 89\times\cos 90 = \cos 1\times\cos 2\times\cos 3...........\cos 89\times 0$

Also,

A number after multiplying with 0 gives 0,

$\implies \cos 1\times \cos 2\times\cos 3...........\cos 90=0$