Question

find the value of 6 tan square A-6 sec square A

Answer 1

we use the identity sec^2 A - tan ^2 A =1-----(1)


6tan^2 A - 6 sec ^2 A= -6 (sec^2A -tan ^2 A)

= -6*1 [ from(1)]
=-6

Answer 2

Solution is attached below