Question

(sec theta +tan theta) (1-sin theta)=cos theta​

Answer 1

Answer:

(secθ+tanθ)(1−sinθ),

=(1cosθ+sinθcosθ)(1−sinθ),

=(1+sinθcosθ)(1−sinθ1),

=1−sin2θcosθ,

=cos2θcosθ,

=cosθ