Question

if A=30° then prove that : (cos^3 A -cos 3A/COS A) +(sin^3 A + sin 3A/sin A)= 3

​

Answer 1

Answer:

I have not shown that 30 is multiplying by 3 or anyone

so please firstly put the value in question by yourself and then see this

please mark it as the best ans

and also please subscribe to my YouTube channel

Mr. rule BREAKER