Math, asked by nathanaeladleymyrick, 11 months ago

Pake cara sampai ke jawaban

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Answered by jai3359v

0

Step-by-step explanation:

cos ( A + B ) = cosA cosB - sinAsinB

= 4/5×7/25 - 3/5×24/25

= 28/125 - 72/125

= - 44/125

option A

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