Question

The vectors, Ä= sin(at)i – cos(at)j and
B= cos( at^2/4) i+ sin at^2/4) j are orthogonal to
each other, the value to t would be (where a is
positive constant)
(1) t = 2
(2) t = 4
(3) t = 6
(4) t = 8
​

Answer 1

Answer:

(2) t=4

Explanation:

Refer to attachment!!!!!!!