मराठी

Find the Value of X in Each of the Following : Cos X = Cos 60º Cos 30º + Sin 60º Sin 30º -

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प्रश्न

Find the value of x in each of the following :

cos x = cos 60º cos 30º + sin 60º sin 30º

बेरीज

उत्तर

cos x = cos 60º cos 30º + sin 60º sin 30º

cosx=12×32+32×12

cosx=34+34

⇒ cos x = √3/2

⇒ cos x = cos 30º

⇒ x = 30º

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