हिंदी

If cosA + cos2A = 1, then sin2A + sin4A= 1.

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प्रश्न

If cosA + cos2A = 1, then sin2A + sin4A = 1.

विकल्प

  • True

  • False

MCQ
सत्य या असत्य
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उत्तर

This statement is True.

Explanation:

∵ cosA + cos2A = 1

⇒ cosA = 1 – cos2A = sin2A  ...[∵ sin2A + cos2A = 1]

⇒ cos2A = sin4A

⇒ 1 – sin2A = sin4A  ...[∵ cos2A = 1 – sin2A]

⇒ sin2A + sin4A = 1

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 8: Introduction To Trigonometry and Its Applications - Exercise 8.2 [पृष्ठ ९३]

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एनसीईआरटी एक्झांप्लर Mathematics Exemplar [English] Class 10
अध्याय 8 Introduction To Trigonometry and Its Applications
Exercise 8.2 | Q 5 | पृष्ठ ९३
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