Question

Cos 36 Cos54° Sin 36 sin 54°=0​

Answer 1

Answer:

Step-by-step explanation:

It in the form of cos(a+b)

I think the question is wrong

If it cos 36 cos54 - sin 36 sin54

Then cos (54+36)

Cos(90)

=0

Therefore l.h.s=r.h.s

Answer 2

Answer:

0

1. Step-by-step explanation:
2. 1/sin36 cos54 1/cos54 sin54
3. cos54 cos 54 sin 54 sin 54
4. 0=R.H.S