Question

1/secA-TanA +1/secA+TanA = 2/cosA​

Answer 1

Step-by-step explanation:

lhs

=1/sec-tan +1/sec+tan

lcm,=sec+tan+sec-tan/sec2-tan2

since sec2-tan2=1,

=2sec

since sec=1/cos,

=2×1/cos

=2/cos=rhs