Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

If A + B + C = 45°, the value of Σ(tan A + tan A tan B) is:

1

1 - n tan A

2

1

3

1 + \(\prod tan A\)

4

1 + Σtan A

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