If cot 2 A = tan (A - 48o), then what is

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Home Questions GUGCYV4723

Target Exam

CUET

Subject

General Aptitude Test

Chapter

Quantitative Reasoning

Topic

Trigonometry

Question:

If cot 2 A = tan (A - 48^o), then what is the value of A ?

Options:

36 degree

46 degree

42 degree

40 degree

Correct Answer:

46 degree

Explanation:

We are given that ,

cot 2 A = tan (A - 48^o)

{ Using , tanA = cotA Iff A + B = 90º }

So, 2A + A - 48º = 90º

3A = 138º

A = 46º