Question

What is the side included between the angles
i) X and Z of ∆ XYZ ii) U and V of ∆ UVW. Pls tell me how to do this. If anyone does they will be marked as brainliest.

Answer 1

Step-by-step explanation:

2S=x+y+z⇒

4

S−x

=

3

s−y

=

2

S−z

=λ

S−x=4λ

S−y=3λ

S−z=2λ

____________

S=9λ

Adding all, we get

S=9λ,x=5λ,y=6λ,=z=7λ

πr

2

=

3

8π

⇒r

2

=

3

8

Δ=

S(S−x)(S−y)(S−z)

⇒Δ=

9λ.4λ.3λ.2λ

=6

6

λ

2

R=

4Δ

xyz

=

4.6

6

λ

2

5λ.6λ.7λ

=

4

6

35

λ

we get λ=1

(A) Δ=6

6

(B) R=

4

6

35

λ=

4

6

35

(C) r=4Rsin

2

X

sin

2

Y

sin

2

Z

⇒

3

2

2

=4.

4

6

35

.sin

2

x

sin

2

Y

sin

2

z

35

4

=sin

2

x

sin

2

y

sin

2

z

(D) sin

2

(

2

X+Y

)=cos

2

2

Z

=

xy

S(S−z)

=

5.6

9.2

=

5

3

Answer 2

Step-by-step explanation:

the triangle x y z has the points x and z the side lying between then is xz the answer of (i) side xz

the triangle u v w has the points u and v the side lying between them is u v the answer of (ii) side uv