SSC CHSL 2020 PYQ — Question 75

SSC CHSL - 14th October 2020 - Shift 2 • Quantitative Aptitude • Q75

Which of the following values suits for A to make the equation  True?

Show answer & explanation

Correct answer: B

Explanation

The correct answer is Option 2 i.e .

Understanding/Application

(A tan620 sec280 cot380)/(cosec620 tan110) = 1

(A tan620 sec(90 - 62)0 cot380)/(cosec620 tan110) = 1

(A tan620 cosec620 cot380)/(cosec620 tan110) = 1

(A tan620 cot380)/tan110 = 1

A = tan110/(tan620 cot380)

A = (cot620 tan380)/cot110

A = {(cot(90 - 28)0 tan380)/cot(90 - 79)0

A = (tan280 tan380)/tan790