If Sin1°+Sin2°+Sin3°=3, then find Cos1°+Cos2°+Cos3°=?

1.	If Sin1°+Sin2°+Sin3°=3, then find Cos1°+Cos2°+Cos3°=?
Answer» The value of cos1 + Cos2 + cos3 = 0 Explanation: Sin1 +Sin2 + Sin3 =3 The maximum value of sin(x) is 1. The value of 3 can only be obtained if all the sin angle takes the value of 1. So, Sin1 = Sin2 = Sin3 = 1 We can conclude that 1 ~ 2 ~ 3 ~ 90° So, cos1 + Cos2 + cos3 = cos90° + Cos90° + cos90°= 0 + 0 + 0 = 0

Answer»

The value of cos1 + Cos2 + cos3 = 0

Explanation:

Sin1 +Sin2 + Sin3 =3
The maximum value of sin(x) is 1. The value of 3 can only be obtained if all the sin angle takes the value of 1.

So, Sin1 = Sin2 = Sin3 = 1

We can conclude that

1 ~ 2 ~ 3 ~ 90°

So, cos1 + Cos2 + cos3 = cos90° + Cos90° + cos90°= 0 + 0 + 0 = 0

Discussion