Tuesday, 26 September 2023

ALGEBRA K7

 Factorize the expression  Cos4m – Sin4m

 

Solution

 

= Cos4m – Sin4m

 

= (Cos2m)2 – (Sin2m)2.

 

= (Cos2m – Sin2m) (Cos2m – Sin2m).[Since a2 – b2 =(a-b)(a+b)]

 

= (Cos2m – Sin2m) (Cos2m – Sin2m) answer

 

TRY THIS………….

 

Factorize the expression  Cos8c – Sin8c

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