Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Mathematics Trigonometry Trigonometric Identities

What is the value of tan 10°.tan 25° .tan 45°.tan 65°.tan 80°

1

0

2

2

3

1

4

More than one of the above

5

None of the above

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