4( Sin^4 30+ cos^4 60)
-3(cos^45°-sin^2 90°)+(sin^2 60°+sin45°)
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निम्नलिखित के मान निकालिए:
(i) sin60∘cos30∘+sin30∘cos60∘ (ii) 2tan245∘+cos230∘−sin260∘
(iii) cos45∘sec30∘+cosec 30∘ (iv) sin30∘+tan45∘−cosec 60∘sec30∘+cos60∘+cot45∘
(v) 5cos260∘+4sec230∘−tan245∘sin230∘+cos230∘
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