Question

if secA+tanA=x,then a find the value of A​

Answer 1

Answer:

Step-by-step explanation:

sec²A - tan²A = 1

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

x(sec A - tan A) = 1

sec A + tan A = x

sec A - tan A = 1/x

2 sec A = x + 1/x

2 sec A = (x² + 1)/x

sec A = (x² + 1)/2x