A

-A

±A

(O)

(-2, -3)

(2, 3)

(0, 3)

(2,0)

${\cos }^{-1}\frac{1}{\sqrt{2}}$

${\sin }^{-1}\frac{1}{\sqrt{3}}$

${\cos }^{-1}\frac{1}{\sqrt{3}}$

$-{\cos }^{-1}\frac{1}{\sqrt{3}}$

$\frac{2}{3}$

$\frac{3}{2}$

6

-6

tan²θ

cot²θ

cos2θ

tan2θ

± (1 + i)

± (1 - i)

1 ± i

-2i

বৃত্ত

উপবৃত্ত

অধিবৃত্ত

পরাবৃত্ত

$\frac{u^2}{2g}$

$\frac{u^2}{g}$

$\frac{2u^2}{g}$

$\frac{{\mathrm{u}}^2{\sin }^{2}2\mathrm{a}}{\mathrm{g}}$

$\frac{1}{x}\left({\log }_a^e\right)$

$\frac{1}{x}\left({\log }_e^a\right)$

$\frac{1}{x}\ln a$

$\frac{1}{x}\log a$

30°

60°

90°

120°

-16

12

8

16

a

b

c

a + b

AB = BA

AB ≠ BA

AB = 1

BA = 1

$\frac{\mathrm{\pi }}{2}$

π

$\frac{\mathrm{\pi }}{4}$

$\frac{\mathrm{\pi }}{8}$

2

4

6

-8

3

1

e

2

$a\left(1-\frac{\pi }{2}\right)$

$a\left(1+\frac{\pi }{2}\right)$

$\frac{a\pi }{2}$

$a\left(\frac{\pi }{2}-1\right)$

0.5 cm

1.0 cm

1.5 cm

2.0 cm

${}^{n+1}C_r$

${}^{n}C_{r+1}$

${}^{n+1}C_{r-1}$

$\frac{n+1}{r}$

$\frac{1}{4\pi }$

8π

4π

$\frac{1}{8\pi }$