Teaching RPSC School Lecturer Mock Test Series 2024 Mathematics Trigonometry Trigonometric Functions
\(\left(\dfrac{\sec 18^\circ}{\sec 144^\circ} + \dfrac{\text{cosec} \ 18^\circ}{\text{cosec} \ 144^\circ}\right)\) किसके बराबर है?
1
sec 18°
2
cosec 18°
3
-sec 18°
4
-cosec 18°
5
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