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Find the value of : cos 1140° - Mathematics and Statistics

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प्रश्न

Find the value of :

cos 1140°

योग

उत्तर

We know that cosine function is periodic with period 2π.

∴ cos 1140°  = cos (3 x 360° + 60°)

= cos 60°

= `1/2`.

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Periodicity of Trigonometric Functions
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Trigonometry - 1 - EXERCISE 2.2 [पृष्ठ ३१]

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बालभारती Mathematics and Statistics 1 (Arts and Science) [English] 11 Standard Maharashtra State Board
अध्याय 2 Trigonometry - 1
EXERCISE 2.2 | Q 14) ii) | पृष्ठ ३१
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