Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Trigonometry

Question:

If sec θ - cos θ = 14 and 14sec θ = x, then the value of x is _________.

Options:

$tan^2θ$

$sec^2θ$

$2sec θ$

$2tan θ$

Correct Answer:

$tan^2θ$

Explanation:

sec θ - cos θ = 14

{ we know, cos θ = \(\frac{1}{ secθ}\) }

sec θ - \(\frac{1}{ secθ}\) = 14

sec²θ - 14 sec θ  - 1 = 0

{ we know, sec²θ - tan²θ = 1 }

tan²θ = 14 sec θ    -----(1)

ATQ,

14 sec θ = x     ----(2)

From 1 and 2 .

x = tan²θ