Выражение cosb/1-sinb + cosb/1+sinbесли cosb=0,4

Question

Алгебра: Выражение cosb/1-sinb + cosb/1+sinbесли cosb=0,4​

FinSpb · Answer

рррннр және қаласы бойынша мемлекеттік кірістер департаменті оңайлатылған және

Объяснение:

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Выражение cosb/1-sinb + cosb/1+sinbесли cosb=0,4​