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Cho tam giác ABC vuông tại A < góc B=a chứng minh: a) 1+tan^(2)a=(1)/(sin^(2)a ) làm giúp mình với
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Dec 28, 2022
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Cho tam giác ABC vuông tại A < góc B=a chứng minh: a) 1+
a=
làm giúp mình với
Mathematics
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Daniel McCarthy
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L
H
S
:
-
Hence verified
Ilya Vinnichenko
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Jan 3, 2023
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Ilya Vinnichenko
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