Question

Class-9. CBSE Board!!​

Answer 1

Answer:

Area of triangle having vertices as (x

1

,y

1

),(x

2

,y

2

),(x

3

,y

3

) is given as

=

2

1

∣

∣

∣

∣

∣

∣

∣

∣

x

1

x

2

x

3

y

1

y

2

y

3

1

1

1

∣

∣

∣

∣

∣

∣

∣

∣

⇒35=

2

1

∣

∣

∣

∣

∣

∣

∣

∣

2

5

k

−6

4

4

1

1

1

∣

∣

∣

∣

∣

∣

∣

∣

⇒35=

2

1

∣2(0)+6(5−k)+1(20−4k)∣

⇒∣50−10k∣=70

⇒50−10k=±70

⇒50−10k=70 and 50−10k=−70

⇒−10k=20 and 10k=−120

⇒k=−2 and k=12

Step-by-step explanation:

tq

Answer 2

Answer:

shayad ye ans apke ques se match na kare lakin ap isse dekjkar solve kar sakte ho