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20-07-2019
Mathematics

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20-07-2019

Answer:

cos-1(6.9/12)

sin-1( 9.8/12)

tan-1(9.8/6.9).

Step-by-step explanation:

cos <BAC = adjacent / hypotenuse

= 6.9 / 12.

sin < BAC = opposite / hypotenuse = 9.8/12

tan < BAC = opposite/adjacent = 9.8/6.9

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