1. C)
  2. I.
  3. I.
  4. I.3. , . .
  5. I. Ͳ
  6. II. .
  7. III.
sin2? + cos2? = 1 ( ) tg? ctg? = 1
tg? = ctg? =
1 + tg2? = 1 + ctg2? =


sin cos cos - sin sin
cos - sin sin - cos - cos
tg - ctg ctg tg - tg
ctg - tg tg ctg - ctg
sin - cos - cos - sin sin
cos sin - sin cos cos
tg - ctg ctg - tg tg
ctg - tg tg - ctg ctg

1 2



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