Question

Please help ..........
It's Class 11 question .

Answer 1

Hello dear,.
U just follow this steps for your solution,
I cant solve full answer bcz its so lon dear,

my soln.
a+b/a-b = tan(t + p)/tan(t-p)

=>In the first equation, write the tans as sin/cos and then use the trig formulas for sums and products, to get

=>You also have the equation  from which 
Square the equations (1) and (2) and add
That simplifies to give the result that you want.
Notice that this is really a problem about a triangle, with sides a, b, c and angles (opposite the side a) and (opposite the side b). The equation (1) is then the sine rule, and the equation is the cosine rule.

Hope its help you dude, :-)
Regarded by :- ROHIT KUMAR GUPTA
, THANKS