Question

Government of India is working regularily for the growth of handicapped persons. For

this , three STD booths situated at A,B,C as shown in the figure ,which are operated by

handicapped persons. These three booths are equdistant from each other as shown in the

figure.

(i) Which type of ∆ABC is the given figure?

(a) Equilateral triangle

(b) Isosceles triangle

(c) Right angled triangle

(d) Scalene triangle

(ii) Measure of ∠ABC is

(a) 45 o

(b) 60 o

(c) 30 o

(d) 90 o

(iii) If AB = 6cm , then value of BC +CA is

(a) 10 (b) 12 ( c) 14 (d) 16

(iv) Measure of ∠ BOC is

(a) 90 o ( b) 100 o

(c) 120 o

(d) 50 o

(v) Value of ∠OBC + ∠OCB is

(a) 60o

(b) 30 o

(c) 45 o (d) 90 o​

Answer 1

Answer:

Velocity of A is v along AB. The velocity of B is along BC.Its component

along BA is vcos60=

2

v

. Thus, the separation AB decreases at the rate

v−(−

2

v

)=

2

3v

Since, this rate is constant, the time taken in reducing the separation AB from d to zero is

t=

(3v/2)

d

=

3v

2d

Answer 2

Step-by-step explanation:

frist answer which type of angle abc