ТРИГОНОМЕТРИЯ 2cos(α-2π)-sin(α-π/2) ------------------------------ cos(9π/2)+2sin(2π-α). Created by 1777001142001. matematika-ru

2)+2sin(2π-α)...

1777001142001 @1777001142001

July 2021 1 42 Report

ТРИГОНОМЕТРИЯ
2cos(α-2π)-sin(α-π/2)
------------------------------
cos(9π/2)+2sin(2π-α)

Answers & Comments

potapov19461

Verified answer

Cos(α+2π)=cosα,
sin(αα α-π/2)=-sin(π/2 -α) = -cosα.
2cosα-(-cosα)=3cosα - это числитель.
cos(9π/2 -α) =cos(4π + π/2 -α)= cos(π/2 -α) = sinα.
sin(2π-α) = sin(-α) = -sinα,
sinα+2(-sinα) = -sinα -это знаменатель.
3cosα / (-sinα) = -3 ctgα.

1 shestnadcatiletnij evgenij ustroilsya na vysokooplachivaemuyu rabotu na zarabotafbb9af1370405b32d5957e4c2aba4231 99367

Answer

Answers & Comments

Verified answer

na primere sulfata ammoniya oharakterizovat himicheskie svojstva solej neskolk

nem yaz sostavit predlozhenie das zimmer der bruder sein klein

erganzen sie folgende satzreihen gebrauchen sie den inhalt des vorhergehenden s

1 shestnadcatiletnij evgenij ustroilsya na vysokooplachivaemuyu rabotu na zarabotafbb9af1370405b32d5957e4c2aba4231 99367

рекомендуемые вопросы

Helpful Links

Helpful Social