Prove that (1+cos(A-B)cosC)/(1+cos(A-C)cosB)=(a^(2)+b^(2))/(a^(2)+c^(2 – InterviewSolution

InterviewSolution

1.	Prove that (1+cos(A-B)cosC)/(1+cos(A-C)cosB)=(a^(2)+b^(2))/(a^(2)+c^(2))
Answer» `(a^(2)+B^(2))/(b^(2)+C^(2))` `(a^(2)+b^(2))/(a^(2)+c^(2))` `(a^(2)-b^(2))/(b^(2)-c^(2))` `(a^(2)-b^(2))/(a^(2)-c^(2))` ANSWER :B

Discussion

No Comment Found

Related InterviewSolutions

Let f:RtoR, defined by f(x)={{:(1",",ifx""inQ),(-1",",ifx""inQ):} Find (i) f(1)/(2) (ii) f(0.34) (iii) f(sqrt2) (iv) f(pi) (v) range(f) (vi) f^(-1)(1) (vii) f^(-1){1}
The reflection of the point a in the plane vecr.vecn=q is
Ifsin y = x sin (y - a) and (dy)/(dx) = A/(1 + x^2 - 2x cos a) then the value of A is
A point moves so that the differerence of the squares of its distance from the x-axis and the y-axis is constant. Find the equation of its locus.
Find r(x,y) if cov (x,y) =-16.5, var(x)=2.25 and sigma_(y)=12
For set {(a, b) : 2a^(2)+3b^(2)= 35, a, b in Z} the number of its elements is………..
If the rate of change in the perimeter of a square is K times the rate of change in its side then k =
The locus represented by the equation x^(2)+y^(2)+4x+2y-8=0 is
Identify the Quantifiers in the following statements: For all real numbers x with xgt3,x^(2) is greater than 9.
If A, B C are three events associated with a random experiment, prove that P(AcupBcupC)=P(A)+P(B)+P(C)-P(AcapB)-P(AcapC)- P(BcapC)+ P(AcapBcapC).