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sin-1 x + sin-1 y =  எனில், cos-1 x + cos-1 y = ? . 

  1. -3π/4
  2. π/4 
  3. -π/4
  4. 3π/2 

Answer (Detailed Solution Below)

Option 2 : π/4 
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Detailed Solution

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கருத்து:

sin-1 x + cos-1 x =   

கணக்கீடு:

sin-1 x + sin-1 y =  

⇒  

⇒ π - ( cos-1 x + cos-1 y ) = 

⇒ cos-1 x + cos-1 y =  

சரியான விருப்பம் 2 ஆகும்.

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