Yechish: .
Javob: 0,6
2. ni hisoblang.
Yechish:
=.
Javob:
3. cos(2arccos) ni hisoblang.
Yechish: cos(2arccos)=cos2(arccos)-cin2(arccos)=[cos(arccos)]2-
-[sin(arccos)]2=-(1-)=-1+=-
Javob: -
4. sin (2arctg3) ni qiymatini toping.
Yechish: sin(2arctg3)=2sin(arctg3)cos(arctg3)=
=0,6.
Javob: 0,6
5. tg(2arcsin) ni hisoblang.
Do'stlaringiz bilan baham: |