Quantitative Aptitude » Trigonometry

QUESTION

यदि 4x = sec θ तथा 4 ⁄ x = tanθ हो, तो 8(x2 - 1 ⁄ x2) क्या होगा?

A)

1⁄2

B)

1⁄4

C)

1⁄16

D)

1⁄8