Forwarded from 🛞Chimchim🎡
a+b=10
ab=1
==========
(a+b)^2=a^2+b^2+2ab
a^2+b^2=98
.........................
(a^3+b^3)=970
================
a^3+b^3. 970
----------------. = --------
ab. 1
=================
Ans----970...✍️
ab=1
==========
(a+b)^2=a^2+b^2+2ab
a^2+b^2=98
.........................
(a^3+b^3)=970
================
a^3+b^3. 970
----------------. = --------
ab. 1
=================
Ans----970...✍️
Forwarded from Yogesh
Tanb=-1/3
Tanb/2=x
-1/3=2x/1-x^2
X^2-6x-1=0
Let tan2a=y
(1-1/y)(1+y)=6
Y^2-6y-1=0
2a=b/2. B=4a
Tanb/2=x
-1/3=2x/1-x^2
X^2-6x-1=0
Let tan2a=y
(1-1/y)(1+y)=6
Y^2-6y-1=0
2a=b/2. B=4a
Forwarded from Yogesh
5,7,8
Let bac=@. Cos@=1/2
@=60
S=20 . Delta=√20*10*6*4=10*4√3
R=2√3. 1,√3,2. ==2√3,6,4√3
Let circle touch at pqr
P ,q,rbetween ab. Bc ,ca
Ap=6 bp=4=bq. Now bo=2√7
Qc=cr=10. Oc=√100+12=4√7
Sum 6√7+4√3
Let bac=@. Cos@=1/2
@=60
S=20 . Delta=√20*10*6*4=10*4√3
R=2√3. 1,√3,2. ==2√3,6,4√3
Let circle touch at pqr
P ,q,rbetween ab. Bc ,ca
Ap=6 bp=4=bq. Now bo=2√7
Qc=cr=10. Oc=√100+12=4√7
Sum 6√7+4√3