Question

tan theta =2, then find sec theta=?

Answer 1

tan theta=2

we know that tan theta =p/b

p=2,b=1

h=√P2+b2

h=√5

so,sec theta=h/b=√5/1

u can also use sec2theta-tan2theta =1

Answer 2

we have,
tan theeta =2 then we find out sec theeta = ?
we know that ,
tan square theeta + 1 = sec square theeta
then
2×2+1= sec square theeta
5 = sec square theeta
then sec theeta = √5