Home
Class 12
MATHS
Consider a DeltaABC and let a, b and c d...

Consider a `DeltaABC` and let a, b and c denote the lengths of the sides opposite to vertices A, B and C, repectively. `if a=1,b=3 and C=60^(@),` then `sin ^(2)` B is equal to

A

`27/28`

B

`3/28`

C

`81/28`

D

`1/3`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

Consider a Delta ABC and let a,b, and c denote the leghts of the sides opposite to vertices A,B and C, respectively. Suppose a=2,b =3, c=4 and H be the orthocentre. Find 15(HA)^(2).

Prove that in any DeltaABC,cos A=(b^(2)+c^(2)-a^(2))/(2bc) where a, b and c are the magnitudes of the sides opposite to the vertices A, B and C respectively.

In DeltaABC if m angle C = 90^@ than tanA + tanB = ......(where a,b,c are sides opposite to angles A, B, C respectively).

In a right triangle with legs a and b and hypotenuse c, angles A,B and C are opposite to the sides a,b and c respectively, then e^(lnb-lna) is equal to-

If a,b and c are the position vectors of the vertices A,B and C of the DeltaABC , then the centroid of DeltaABC is

Using vectors, find the area of the DeltaABC with vertices A(1,2,3),B(2,-1,4) and C(4,5,-1) .

If a, b and c are in GP, then the value of (a-b)/(b-c) is equal to……..

Let S be the square of unit area. Consider any quadrilateral which has one vertex on each side of S. If a, b, c and d denote the lengths of the sides of the quadrilateral, prove that 2 le a^(2)+b^(2)+c^(2)+d^(2)le 4 .

If a,b,and c are the side of a triangle and A,B and C are the angles opposite to a,b,and c respectively, then Delta=|{:(a^(2),bsinA,CsinA),(bsinA,1,cosA),(CsinA,cos A,1):}| is independent of

Let A,B,C are 3 points on the complex plane represented by complex number a,b,c respectively such that |a|= |b|= |c|=1,a+b+c = abc=1 , then