railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

If A = 30°, then find the value of cos² A + cos² (60° + A) + cos² (60° – A).

1

-3/2

2

1

3

3/2

4

√3/2

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