Math, asked by dondee1295, 11 months ago

கீ‌‌ழ்‌க்க‌ண்டவ‌ற்‌றி‌ன் ம‌தி‌ப்புகளை‌க் கா‌ண்க

(sin90° + cos60°+ cos45°) * (sin30° +cos0°- cos45°)

Answers

Answered by steffiaspinno
0

கீ‌‌ழ்‌க்க‌ண்டவ‌ற்‌றி‌ன் ம‌தி‌ப்புகள்:

(sin90° + cos60°+ cos45°) x (sin30° +cos0°- cos45°)

\begin{aligned}&=\left(\sin 90^{\circ} \sin 30^{\circ}\right)+\left(\sin 90\left(-\cos 0^{\circ}\right)\right)\end{aligned}

= (sin90^o . Cos45^o) + (Cos60^o. Sin30^o)

= (Cos60^o.Sin30^o) - (Cos60^o . Cos0v)

= (Cos 60^o . Cos45^o) + (Cos45^o. Sin30^o)

= - (Cos45^o. Cos0^o) + (Cos45^o . Cos45^o)    

1(\frac{1}{2} + 1 (-1) + ((1)(1/\sqrt{2} )) + (\frac{1}{2}  * \frac{1}{2} ) - (1/\sqrt{2} ) (1) + (1/\sqrt{2} * 1/\sqrt{2} )

-1 +\frac{1}{4} + 2 ( \frac{1}{2 \sqrt{2} }) + \frac{1}{2}

⇒ -4 + 1 +2\sqrt{2} + \frac{2}{4}

2\sqrt{2}  + \frac{2}{4}  

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