Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Trigonometry

\(\frac{\sin 50^{\circ}-\sin40^{\circ}}{\cos 50^{\circ}-\cos 40^{\circ}}=?\)

1

-2

2

2

3

-1

4

More than one of the above

5

None of the above

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