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Scorpion4ik [409]
2 years ago
13

Use any method you like to find the measure of angle A

Mathematics
1 answer:
lutik1710 [3]2 years ago
4 0
A = 71.5 degrees (1 dp)

cos(A) = (21^2 + 16^2 - 22^2) / (2 x 21 x 16)
= 0.31696...
A = cos^-1(0.31696...) = 71.5 degrees
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