Question

Sec^2(theta)-tan^2(theta)=1

Answer 1

sec^2 = what ?:D

Answer 2

That is identity, nothing to do with it

Answer 3

1+tan^2

Answer 4

yep right so replace sec^2x by 1+tan^2 then just simplify :-)

Answer 5

So I. Have 1+tan^2-tan^2=1?

Answer 6

After I replace it

Answer 7

yes right wht else you can do at left side ?

Answer 8

Add cross out the tan^2?
So left with 1=1?

Answer 9

:-)!!

Answer 10

Thanks once again haha

Answer 11

my pleasure :-)