Question

value of Sin A + Cos A equal to 1 then the value of 3 Sina cosa is

Answer 1

Answer:

0

Step-by-step explanation:

We know that Sin A + Cos A = 1.

So there are two possibilties, sin 90° + cos 90° = 1 and then we have :- cos 0° + sin 0° = 1. So, either of them replace 3sinA cosA we will get 0 as anything multipled to 0 is always 0.

So, 3 sin0° cos0°  ⇒  3 x 0 x 1  ⇒ 0

      3 sin90° cos90°   ⇒  3 x 1 x 0  ⇒ 0