Question

please tell me how to solve this..​

Answer 1

Answer:

I think right answer is a of question 1

Answer 2

Answer:

secA +tanA= x-------------(1)

but sec²A - tan²A = 1

(secA+tanA)(secA-tanA)=1

x(secA-tanA) =1

secA-tanA= 1/x---------(2)

solve (1) and (2)

secA+tanA =x

secA-tanA=1/x

-----------------------

2secA= x+1/x

2secA= x²+1/x

secA= x²+1/2x

so option b is correct