Mathematics · Trigonometry

sin 2 (30°) + 2 tan 2 (60°) - 5 cos 2 (45°) का मान ज्ञात कीजिए।

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sin 2 (30&deg;) + 2 tan 2 (60&deg;) - 5 cos 2 (45&deg;) का मान ज्ञात कीजिए।