[" If "(cos A)/(cos B)=n" and "(sin A)/(sin B)=m" then "(m^(2)-n^(2))sin^(2)B=],[[" (a) "1-pi^(2)," (b) "1+n^(2)],[" (c) "1-n," (d) "1+n]]

Similar Questions

Explore conceptually related problems

If (cos A)/(cos B)=m and (cos A)/(sin B)=n then prove that (m^(2)+n^(2))cos^(2)B=n^(2)

If n=(cos alpha)/(cos beta),m=(sin alpha)/(sin beta) then (m^(2)-n^(2))sin^(2)beta is

If (cos x)/(cos y) = n , (sin x)/(sin y) = m , then what is (m^2 - n^2) sin^2 y equal to ?

cos A = a cos B, sin A = b sin B rArr (b ^ (2) -a ^ (2)) sin ^ (2) B =

If sin A=a cos B and cos A=b sin B then tan^(2)B =

lfcos A+s in B=m and s in A+cos B=n prove that 2sin(A+B)=m^(2)+n^(2)-2

If a cos A+b sin A=m and a sin A-b cos A=n prove that a^(2)+b^(2)=m^(2)+n^(2)

Prove that (cos A-cos B)^(2)+(sin A-sin B)^(2)=4sin^(2)((A-B)/(2))

If cos A+sin B=m and sin A+cos B=n , prove that 2sin(A+B)=m^2+n^2-2.

to prove that (cos A-cos B)^(2)+(sin A-sin B)^(2)=4sin^(2)((A-B)/(2))