Question

cos 4 A -sin4 A is equal to​

Answer 1

Answer: UR REQUIRED ANSWER ;-

QUESTION .

≡ cos ⁴ A - sin⁴ A is equal ?

solution ,

⇒(cos² A ) ² - (sin ² A )²

⇒ (cos² A  + sin² A  ) ( cos² A - sin ² A)

⇒ cos ² A - sin ² A  

⇒ cos 2 A .

Step-by-step explanation: hope this will help u mate .. , need feedback plz .

itz akansha ,

the dynamite.