Mathematics, 23.07.2020 08:01 deadlydazy13

a, b, c are the 3 segments of the triangle ABC. a, b, c form a geometric sequence cos B =3/4 (1) Find sin B. (2) Judge if sin A, sin B, sin C also form a geometric sequence. (3) Find cot A + cot C. (4) If BA · BC =3/2, find a + c.

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a, b, c are the 3 segments of the triangle ABC. a, b, c form a geometric sequence cos B =3/4 (1) Fin...

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