If tan `(alpha + beta) = a + b and tan (alpha - beta) = a -b, then show that a tan alpha - b tan beta = a^2 - b^2`.

If tan(alpha+beta)=a+b and tan(alpha-beta)=a-b then show that atanalpha-btanbeta=a^2-b^2

If tan (alpha+beta)=a+b and tan(alpha-beta)=a-b,thenshowtâtan alpha-b tan beta=a^(2)

sin alpha + sin beta = a "and" cos alpha + cos beta = b (tan alpha + tan beta)/(1-tan alpha tan beta)=

Show that (sin (alpha + beta))/( sin (alpha + beta)) = 2, given that tan alpha = 2 tan beta.

If (sin(alpha+beta))/(sin(alpha-beta)) = (a+b)/(a-b) , then prove that a tan beta = b tan alpha .

(tan alpha + tan beta )/( tan (alpha + beta ))+(tan alpha - tan beta )/(tan (alpha - beta )) =

If cos alpha+ cos beta= a sin alpha+ sin beta=b , then show that "tan" (alpha)/(2)+"tan" (beta)/(2)= (4b)/(a^(2)+b^(2)+2a)

If 2tan alpha=3tan beta then tan(alpha-beta)=

If" " n tan alpha = (n+1) tan beta " then show that", tan (alpha - beta) = (sin 2 beta)/(2n + 1 - cos2 beta).

If alpha ne beta " and " a tan alpha + b tan beta = (a + b) "tan" (alpha + beta)/2,"show that" (cos alpha)/(cos beta) = a/b.