Question

if 3seca-5tana=k and 6seca+k tana=5 then k square=

Answer 1

Answer:

Squaring after arranging

9sec^2a+25tan^a -30secatana=k^2

36sec^a+25-60sec^a=k^2tan^2a

Adding both equation

45sec^a+25tan^a+25-60sec^a-30secarana=k^asec^a

After dividing both side by sec^a you will get value of k^2