JEE MATHEMATICS MCQ: TRIGONOMETRY RATIOS

1 Easy

1 of 1

Application +4 | -1

\cos \,\,1^\circ + \,\,\cos \,\,2^\circ + \cos \,\,3^\circ + \ldots + \cos \,\,180^\circ =

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Correct option: D

- 1

Option D (

-1

) is correct because the sum of the cosine series from 1° to 180° simplifies to -1 due to symmetry and the value of cos(180°).

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