cos 48degrees×cos 12degrees
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Hi
Here is ur answer mate !!!!!
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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
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_Hope it helps U
zootopia:
But how root five + one ÷4 will come
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