Question

1 + sec - tane
1+sec + tan=
1-sin
cos e
u
[NCERT EXEMPLAR]​

Answer 1

Step-by-step explanation:

1+sec-tan/1+sec+tan

=(sec²-tan²)+(sec-tan)/(1+sec+tan)

=(sec-tan)(sec+tan+1)/(sec+tan+1)

=sec-tan

=1/cos-sin/cos

=1-sin/cos