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2 years ago

9

Determine the measure of ZA. 45.6° 57.7° 55.2° 32.3°

1 answer:

NemiM [27]2 years ago

3 0

Step-by-step explanation:

Cos A = 40^2 + 25^2- 34^2 ÷ (2×40×25)

= 200+625-1156 ÷ (2000)

= 1069 ÷2000

Cos A = 0.5345

A= cos inverse 0.5345

A = 57.7

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