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SSC CGL 2019 PYQ — Question 55

SSC CGL - 6th June 2019 - Shift 2 • Quantitative Aptitude • Q55

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Let  and , if a = b then c = ?

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Correct answer: B

Explanation

Correct answer is option 2 i.e 1 + sin x – cos x

Concept Understanding Application

Sin 90 = 1

Cos 90 = 1

Given

and 

Since, a = b

= 

Putting x = 90

⇒ C = 2

Now we need to check the options by putting x = 90:

Option 2:

1+sinx - cosx

⇒ 1+ 1 - 0 = 2

Since option 2 is satisfy the condition, it is the correct answer.