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cos 48 cos 12..
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Hello friend..☃️☃️
The answer of u r question is..✌️✌️
Is in the pic..
Thank you..⭐️⭐️⭐️
The answer of u r question is..✌️✌️
Is in the pic..
Thank you..⭐️⭐️⭐️
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Answered by
10
hii ✌️
cos48.cos12
= 1/2 ( 2cos48.cos12)
= 1/2 ( cos(48+12) + cos ( 48-12)
= 1/2 ( cos60.cos36)
= 1/2 ( 1/2. √5+1/4)
=(√5+1 )/16
hope it will help you....
by silu12
cos48.cos12
= 1/2 ( 2cos48.cos12)
= 1/2 ( cos(48+12) + cos ( 48-12)
= 1/2 ( cos60.cos36)
= 1/2 ( 1/2. √5+1/4)
=(√5+1 )/16
hope it will help you....
by silu12
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