упростите выражение:. Created by lina7timokhovich. matematika-ru

упростите выражение:...

August 2022 1 2 Report

упростите выражение:

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yarovoe 1.1-sinα cosα (1-sinα)(1+sinα) -cos²α 1-sin²α-cos²α
-------- - --------- = ------------------------------ =   -------------------- =
cosα 1+sinα     cosα(1+sinα)   cosα(1+sinα)
cos²α-cos²α 0
---------------- =---------------------- =0
cosα(1+sinα)   cosα(1+sinα)     cosα
2.tg(3π/2-α)·sin(π-α)+cos(π+α)=ctgα·sinα-cosα= -------- ·sinα-cosα=
   sinα
=cosα-cosα=0
  1    1
cos²α+ ---------------- cos²α + ----------------
   1+ctg²α 1/sin²α
3.---------------------------------------- =----------------------------------------- =
tgα tgα
cos²α+sin²α   1
---------------- =--------- = ctgα
tgα tgα

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