(1+ cos ) (1-cos ) =

(A).Sin 2
(B) tan 2
(C) 1.
(D) 0​

(1+ cos ) (1-cos ) =

(A).Sin 2
(B) tan 2
(C) 1.
(D) 0​

1 thought on “(1+ cos ) (1-cos ) = <br /><br />(A).Sin 2 <br />(B) tan 2 <br />(C) 1. <br />(D) 0​”

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