engineering recuitment ISRO Scientific Assistant Physics 2020 Mathematics Trigonometry Trigonometric Functions
If cos x + cos y + cos z = 0 and sin x + sin y + sin z = 0 then find the value of cos (x – y)
1
1
2
1/2
3
-1/2
4
0
If cos x + cos y + cos z = 0 and sin x + sin y + sin z = 0 then find the value of cos (x – y)