ABC একটি সমকোণী ত্রিভুজ BC, AC এবং AB যথাক্রমে উহার ভূমি , লম্ব এবং অতিভূজ । মনে করি $∠ A B C = θ$ তা হলে কোনটি সত্য ?

Created: 4 months ago | Updated: 2 months ago

\cos θ = \frac{B C}{A B}

C o s θ = \frac{A B}{B C}

S i n θ = \frac{A B}{A C}

নিজে চেষ্টা করুন

987

ABC ত্রিভূজটি ‍a:b:c = 5:4:3 হলে, A কোণের মান কত?

Created: 10 months ago | Updated: 2 months ago

45 °

60 °

75 °

90 °

330

Created: 10 months ago | Updated: 3 months ago

\sqrt[3]{x^{2}}

\sqrt{x}

\frac{1}{x \sqrt{2}}

\frac{1}{\sqrt{x}}

273

Created: 10 months ago | Updated: 3 months ago

x^{2} - 8 x - 12 = 0

x^{2} + 2 x - 15 = 0

x^{2} + 12 x + 15 = 0

x^{2} + 15 x + 2 = 0

x^{2} + 12 x + 8 = 0

258

Created: 10 months ago | Updated: 2 months ago

X - \frac{9 x}{2 x^{2} + 18} + \frac{9}{4 x - 12} + \frac{9}{4 x + 12}

X + \frac{9 x}{2 x^{2} + 18} - \frac{9}{4 x - 12} - \frac{9}{4 x + 12}

X - \frac{9 x}{2 x^{2} + 18} - \frac{9}{4 x - 12} + \frac{9}{4 x + 12}

X - \frac{9}{2 x^{2} + 18} + \frac{9}{4 x - 12} + \frac{9}{4 x + 12}

X + \frac{9 x}{2 x^{2} + 18} + \frac{9}{4 x - 12} + \frac{9}{4 x + 12}

240

Created: 10 months ago | Updated: 3 months ago

[\begin{matrix} 9 & 14 & 10 \\ 7 & 10 & 14 \\ 6 & 7 & 7 \end{matrix}]

[\begin{matrix} 7 & 7 & 10 \\ 9 & 8 & 9 \\ 12 & 9 & 11 \end{matrix}]

[\begin{matrix} 6 & 10 & 10 \\ 6 & 9 & 11 \\ 8 & 11 & 13 \end{matrix}]

[\begin{matrix} 12 & 11 & 11 \\ 8 & 9 & 13 \\ 8 & 7 & 7 \end{matrix}]

[\begin{matrix} 12 & 8 & 8 \\ 11 & 9 & 7 \\ 11 & 13 & 7 \end{matrix}]

196