जर sin x + sin2x = 1 असेल, तर cos2x + cos4x चे मूल्य काढा.

  1. 1
  2. 2
  3. 1.5
  4. यापैकी नाही

Answer (Detailed Solution Below)

Option 1 : 1
Free
SSC CHSL General Intelligence Sectional Test 1
25 Qs. 50 Marks 18 Mins

Detailed Solution

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संकल्पना:

sin2x + cos2x = 1

गणना:

दिलेल्याप्रमाणे: sin x + sinx = 1

आपल्याला माहीत आहे की, sin2x + cos2x = 1

⇒ sin x + (1 – cos2 x) = 1

⇒ sin x = cosx ----(1)

⇒ sinx = cos4x  ((1) वापरून)

⇒ cos2 x + cos4 x = sin x + sin2 x = 1

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