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  • 23-07-2020
  • Mathematics
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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) 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.

Respuesta :

rbsnlns
rbsnlns rbsnlns
  • 23-07-2020

Answer:

option 2 is the right answer

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