Question

if sin1+sin2+sin3=3.findcos1+cos2+cos3=?​

Answer 1

Answer:

Answer would be zero.

Because sin x has maximum value of 1

sin1=sin2=sin3=1 each

angle 1=angle2= angle3=90

At 90 cos x is zero

cos 1+cos 2+cos 3=0

Answer 2

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