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nastyUsus
@nastyUsus
November 2021
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Помогите 7 3а и 3б пожалуйста
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Asila98
A) 2sin2x/cos2x - 2cos2x/sin2x = 3
общий знаменатель: cos2x*sin2x
2sin^2 2x - 2cos^2 2x = 3sin2x*cos2x
-2cos4x - 1,5sin4x = 0
/ cos4x
-2 - 1,5 tg4x = -2
tg4x = 4/3
x= (arctg4/3)4 + pi/4 *n
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Answers & Comments
общий знаменатель: cos2x*sin2x
2sin^2 2x - 2cos^2 2x = 3sin2x*cos2x
-2cos4x - 1,5sin4x = 0
/ cos4x
-2 - 1,5 tg4x = -2
tg4x = 4/3
x= (arctg4/3)4 + pi/4 *n