San yil Sinf: 9-sinf Fan

O’tilgan mavzuni so’rash

Uyga vazifalarni tekshirish.

Mustaqil ish:

3. 
   Yangi mavzuning bayoni
   

№303.Yechish: cosα =  =

tgα=

№304.Yechish: 1+tg²α= ; cos²α= 

Cosα=  Javob: Cosα= 



Yechish: (cos²a-sin²a)(cos²a+sin²a)=cos²a-1+cos²a=2cos²a-1=

Cos²a=( ):2=  cosa=

IV.Mustahkamlash.



Yechish: 1) sinα =  =

2)cosα =  =



Yechish:1) 2) = 

3) = 

V.Baholash.

VI.Uyga vazifa. 308 -309 –misollar .



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