Question

(sec A+tan A)(1-sin A)=​

Answer 1

hello mate...

your ans is cos a

explanation

(secA + tanA) canbe written as

1/cosA +sinA/CasA

i.e. 1+sinA/cosA

now (1+sinA/cosA) x (1-sinA)

(1-sinA)^2 /cosA

i.e cos^2A /cosA

so ans is cosA