Home
Class 11
MATHS
In which of the following situations, it...

In which of the following situations, it is possible to have a triangle ABC?(All symbols used have usual meaning in a triangle)(A) (a +c-b)(a - c + b) = 4bc(B) `b^2 sin 2C +c^2sin 2B = ab` C) `a=3, b=5, c=7 and C=(2pi)/3` (D) `cos((A-C)/2)=cos((A+C)/2)`

Promotional Banner

Similar Questions

Explore conceptually related problems

In which of the following situations,it is possible to have a triangle ABC?(All symbols used have usual meaning in a triangle)(A) (a +(-c-b)(a-c+b)=4bc(B)b^(2)sin2C+c^(2)sin2B=abC)a=3,b=5,c=7 and C=(2 pi)/(3)(D)cos((A-C)/(2))=cos((A+C)/(2))^(3)

In Delta ABC, the ratio (a)/(sin A)=(b)/(sin B)=(c)/(sin C) is not always equal to (All symbols used have usual meaning in a triangle.)

In DeltaABC, if 2b =a+ c and A-C=90^(@), then sin B equal All symbols used have usual meaning in Delta ABC.]

In DeltaABC, if 2b =a+ c and A-C=90^(@), then sin B equal All symbols used have usual meaning in Delta ABC.]

In DeltaABC, if 2b =a+ c and A-C=90^(@), then sin B equal All symbols used have usual meaning in Delta ABC.]

In a triangle ABC, prove that b^(2) sin 2C+c^(2) sin 2B=2bc sin A .

In triangle ABC, b^(2) sin 2C + c^(2) sin 2B = 2bc where b = 20, c = 21 , then inradius =

In triangle ABC, b^(2) sin 2C + c^(2) sin 2B = 2bc where b = 20, c = 21 , then inradius =

In any triangle ABC, prove that: a cos A+b cos B+c cos C=2a sin B sin C

Show that, in a triangle ABC. a^(2) = (b - c)^(2) cos^(2) (A/2) + (b + c)^(2) sin^(2) (A/2) .