Question

If (secθ - 1) (secθ + 1) = 1/3, then cosθ = -------------

1/2
1/√2
√3/2
√2/3​

Answer 1

Step-by-step explanation:

Sec^2 A-1=1/3

Sec^2 A=4/3

SecA=2/root 3

COS A= root 3/2

Answer 2

Answer:

if it is

$1 \div \sqrt{3}$

then the ans. is root 3/2