Question

ம‌தி‌ப்‌பு கா‌ண்க

(cosθ°+sin45°+sin30°)(sin90°-┤ ├ cos45°+cos60°)

Answer 1

Answer:

I don't know the language

Answer 2

விளக்கம்:

$\left(\cos \theta^{\circ}+\sin 45^{\circ}+\sin 30^{\circ}\right)\left(\sin 90^{\circ}-\cos 45^{\circ}+\cos 60^{\circ}\right)\end{aligned}$ ன் மதிப்பு:

$=\left[1+\frac{1}{\sqrt{2}}+\frac{1}{2}\right]\left[1-\frac{1}{\sqrt{2}}+\frac{1}{2}\right]$

$=\left[\frac{2 \sqrt{2}+2+\sqrt{2}}{2 \sqrt{2}}\right]\left[\frac{2 \sqrt{2}-2+\sqrt{2}}{2 \sqrt{2}}\right]$

$=\left[\frac{3 \sqrt{2}+2}{2 \sqrt{2}}\right]\left[\frac{3 \sqrt{2}-2}{2 \sqrt{2}}\right]$

$=\frac{18-4}{4(\sqrt{2})^{2}}\\=\frac{14}{4 \times 2}\\=\frac{7}{4}$