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Question : 20 of 160
Marks:
+1,
-0
Solution:
We have,
sin‌‌sin‌‌sin‌‌sin‌ =sin‌‌sin‌‌sin(−)‌sin(−) =sin‌‌sin‌‌cos‌‌cos‌ =(2‌sin‌‌cos‌.2‌sin‌‌cos‌) =[sin‌‌sin‌] =(sin‌‌sin(−)) =‌sin‌‌cos‌=‌sin‌==
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