ПОМОГИТЕ СРОЧНО РЕШИТЬ!!!sin ^2x + 2 cos^2x -5 cos x

July 2022 1 11 Report

ПОМОГИТЕ СРОЧНО РЕШИТЬ!!!
sin ^2x + 2 cos^2x -5 cos x - 7 = 0

Answers & Comments

teplovadarya (1-cos2x+2(cos2x+1))/2-5cosx-7=0;
1-cos2x+cos2x+1-5cosx-7=0;
-5cosx-5=0;
-5cosx=5;
cosx=-5/5;
cosx=-1;
x=pi+2pik.
объясн.
sin^2x=(1-cos2x)/2;
cos^2x=(cos2x+1)/2.

pomogite reshitna risunke pryamaya ma perpendikulyarna ploskosti abcizvestnochto m

Answer

vson July 2022 | 0 Ответы

v kakom predlozhenii dopushena oshibkavzyavshis za delo prichem v pervyj raz otryad

Answer

vson July 2022 | 0 Ответы

Fill in prepositions where necessary to complete the sentences. 1) The sum ... m...

Answer

vson July 2022 | 0 Ответы

Fill in prepositions where necessary to complete the sentences. 1) The sum ... m...

Answer

vson July 2022 | 0 Ответы

pomogite srochnopozhalujstazapolnite propuski

Answer

vson April 2022 | 0 Ответы

213 sinxcosx2cos2x4 3sin2x4cos2x5

Answer

Answers & Comments

pomogite reshitna risunke pryamaya ma perpendikulyarna ploskosti abcizvestnochto m

pomogite reshittg2x3tgx 2

2 7 zakonchite frazu yavlenie interferencii elektronov mozhno obyasnit ispolz

s2dc1ca276fc25d6dc073575f0571bd43 36459

s255fa19c886a81ff7d89da420e97557c8 6695

v kakom predlozhenii dopushena oshibkavzyavshis za delo prichem v pervyj raz otryad

Fill in prepositions where necessary to complete the sentences. 1) The sum ... m...

Fill in prepositions where necessary to complete the sentences. 1) The sum ... m...

pomogite srochnopozhalujstazapolnite propuski

213 sinxcosx2cos2x4 3sin2x4cos2x5

рекомендуемые вопросы

Helpful Links

Helpful Social