-x sec(2) sin (2)cos(2x)-sec(2x)
Hello,
For n°1: 8 solutions:
k= 1
9*-4/-6=6
-5*-2*-8=-80
3*-7* 1=-21
9*-5/ 3=-15
-4/-2*-7=-14
-6*-8* 1=48
=======================================
k= 2
9*-4/-6=6
-5* 2* 8=-80
3* 7*-1=-21
9*-5/ 3=-15
-4/ 2* 7=-14
-6* 8*-1=48
=======================================
k= 3
9*-4/-6=6
5*-2* 8=-80
-3*-7*-1=-21
9* 5/-3=-15
-4/-2*-7=-14
-6* 8*-1=48
=======================================
k= 4
9*-4/-6=6
5* 2*-8=-80
-3* 7* 1=-21
9* 5/-3=-15
-4/ 2* 7=-14
-6*-8* 1=48
=======================================
k= 5
9* 4/ 6=6
-5*-2*-8=-80
3* 7*-1=-21
9*-5/ 3=-15
4/-2* 7=-14
6*-8*-1=48
=======================================
k= 6
9* 4/ 6=6
-5* 2* 8=-80
3*-7* 1=-21
9*-5/ 3=-15
4/ 2*-7=-14
6* 8* 1=48
=======================================
k= 7
9* 4/ 6=6
5*-2* 8=-80
-3* 7* 1=-21
9* 5/-3=-15
4/-2* 7=-14
6* 8* 1=48
=======================================
k= 8
9* 4/ 6=6
5* 2*-8=-80
-3*-7*-1=-21
9* 5/-3=-15
4/ 2*-7=-14
6*-8*-1=48
=======================================
For n°3: 8 solutions:
k= 1
9*-2/-6=6
-5*-1* 7=-80
-4* 9*-3=-21
9*-5/-4=-15
-2/-1* 9=-14
-6* 7*-3=48
=======================================
k= 2
9*-2/-6=6
-5* 1*-7=-80
-4*-9* 3=-21
9*-5/-4=-15
-2/ 1*-9=-14
-6*-7* 3=48
=======================================
k= 3
9*-2/-6=6
5*-1*-7=-80
4* 9* 3=-21
9* 5/ 4=-15
-2/-1* 9=-14
-6*-7* 3=48
=======================================
k= 4
9*-2/-6=6
5* 1* 7=-80
4*-9*-3=-21
9* 5/ 4=-15
-2/ 1*-9=-14
-6* 7*-3=48
=======================================
k= 5
9* 2/ 6=6
-5*-1* 7=-80
-4*-9* 3=-21
9*-5/-4=-15
2/-1*-9=-14
6* 7* 3=48
=======================================
k= 6
9* 2/ 6=6
-5* 1*-7=-80
-4* 9*-3=-21
9*-5/-4=-15
2/ 1* 9=-14
6*-7*-3=48
=======================================
k= 7
9* 2/ 6=6
5*-1*-7=-80
4*-9*-3=-21
9* 5/ 4=-15
2/-1*-9=-14
6*-7*-3=48
=======================================
k= 8
9* 2/ 6=6
5* 1* 7=-80
4* 9* 3=-21
9* 5/ 4=-15
2/ 1* 9=-14
6* 7* 3=48
=======================================
Answer:
Yes they are congruent
they are congruent by SSS rule that is Side Side Side rule
AD = CD (given side) in the question itself
AB = CB (given side) in the question itself
Db = BD (common side)
thats why by SSS rule they are congruent
Circumference: 2 * pi * r
pi = 3.14, r = 4
2 * 3.14 * 4 = 25.12
Circumference: 25.12 cm
Area = pi * r^2
pi = 3.14, r = 4
3.14 * 4^2 = 50.24
Area: 50.24 cm^2