railway DFCCIL Executive 2025 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

(sin A + cosec A)² + (cos A + sec A)² ನ ಮೌಲ್ಯ ಯಾವುದು?

1

5 - cosec² A + sec² A

2

5 + sec A + cosec A

3

5 + cosec² A + sec² A

4

5 + cosec² A - sec² A

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