engineering recuitment ICAR Technician 2021 Mock Test (Re-Exam) Mathematics Trigonometry Trigonometric Functions

समीकरण cos2x + a sin x = 2a - 7 का एक हल होता है यदि _____।

1

a < 2

2

2 ≤ a ≤ 6

3

a > 6

4

a कोई पूर्णांक है

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