allery1 − cos²θ என்ற கோவை எதற்குச் சமம்?
A1
Bsin²θ
Ccos²θ
Dtan²θ
Answer & Solution
Correct answer: B. sin²θ
sin²θ + cos²θ = 1 என்பதால், 1 − cos²θ = sin²θ கிடைக்கும்.
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