Mathematics, 13.05.2021 14:00 avaleasim
Can someone help solve this, thanks. Let a, β, y be the three interior angles of any triangle, try to prove that cos(a+β+y)= -1.
Answers: 1
Mathematics, 22.06.2019 03:00, jdkrisdaimcc11
Gabrielle's age is three times mikhail's age. the sum of their ages is 40 . what is mikhail's age? __ years old
Answers: 2
Can someone help solve this, thanks.
Let a, β, y be the three interior angles of any triangle, try...
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