I know bionomial theorem
pascal's triangle would be eseir though
pascal's triangle
1 0
1 1 1
1 2 1 2
1 3 3 1 3
1 4 6 4 1 4
those are the coefieicnets
in (a+b)^3
1a^3+3a^2b+3ab^2+1b^3 so
(6+x)^3=6^3+3(6^2)x+3(6)x^2+1x^3=
and this is all under 3
Answer:
add the exponents
Step-by-step explanation:
when multiplying 2 powers that have the same base, you can add the exponents
Answer:
You put 19 instead of 3:)
Step-by-step explanation:
We know that
2π/3 radians-------> convert to degrees-----> 2*180/3---> 120°
120°=90°+30°
Part a) Find <span>sin(2π/3)
</span>sin(2π/3)=sin (90°+30°)
we know that
sin (A+B)=sin A*cos B+cos A*sin B
so
sin (90°+30°)=sin 90*cos 30+cos 90*sin 30
sin 90=1
cos 30=√3/2
cos 90=0
sin 30=1/2
sin (90°+30°)=1*√3/2+0*1/2-----> √3/2
the answer part a) is
sin(2π/3)=√3/2
Part b) Find cos (2π/3)
cos (2π/3)=cos (90°+30°)
we know that
cos (A+B)=cos A*cos B-sin A*sin B
so
cos (90°+30°)=cos 90*cos 30-sin 90*sin 30
sin 90=1
cos 30=√3/2
cos 90=0
sin 30=1/2
cos (90°+30°)=0*√3/2-1*1/2----> -1/2
the answer part b) is
cos (2π/3)=-1/2
Answer:
Idk lol
Step-by-step explanation:
