Question

If 13 sin A = 12
find sec A-tan A.​

Answer 1

Answer:

sin a=12/13

using Pythagoras theorem

in triangle abc

(ab) square+(bc) square=(ac) square

(ab) square=(13) square-(12) square

= 169-144

=25

ab=5

secA=13/5

tan A=p/b

=12/5

=13/5-12/5

=1/5