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ArbitrLikvidat [17]
3 years ago
7

Name the linear pair please!

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
4 0
(-2,6) is the pair for this equation
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In aΔABC, if ∠B = 60° and the ratio of two sides is a : c = 2 : √3 + 1, then ∠A= ____.
UkoKoshka [18]

Answer:

∠A= 45°....

Step-by-step explanation:

To find  ∠A first we have to find the length of side B by cosine law:

b^2 = a^2 + c^2 – 2 a c cos B

b^2=(2)^2 +(√3 + 1)^2 - 2(2)(√3 + 1) cos 60

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A=45°

Thus ∠A= 45°....

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