Question

LEN
Trigonometric Equ
EXERCISE (JM)
Let A and B denote the statements
A: cos a + cos B + cos y = 0
B: sin a + sin B + sin y = 0
f cos (B - y) + cos(y - a) + cos(a - b) =
Niw
then -
TA
) Both A and B are true
(2) Both A and B are false
) A is true and B is false
(4) A is false and B is true​

Answer 1

Answer:

noob.........................