120

216

20

60

0

-2i

2i

2

7

4

3

5

(4,4)

(1,4)

(4,-4)

(-4,4)

$\sqrt{3}$

$\frac{\sqrt{3}}{2}$

1

$\frac{1}{\sqrt{3}}$

$\frac{1}{2}$

1

3

$\frac{x}{x+1}$

$\frac{x+1}{x}$

$\frac{x}{x-1}$

$\frac{x-1}{x}$

sin cos (cos x)

cos x (cos x)

-sin x cos (cos x)

-sin x sin (cos x)

$\sqrt{3}$

$\frac{\sqrt{3}}{2}$

$\frac{\sqrt{3}}{4}$

$\frac{1}{4}$

$0°$

$45°$

$60°$

$90°$

1 sec

1.5 sec

2 sec

3 sec

1

-8

8

0

$3x^2 + 5x -1=0$

$3x^2-5x +1=0$

$5x^2 +x -3=0$

$5x^2 -x-3=0$

1 N, 2 N, 4 N

3 N, 4 N, 5 N

10 N , 20 N , 50 N

5 N, 20 N, 50 N

720

2430

4320

144

A =2 , B =2

A =2, B =-2

A =-2 , B =2

A =2 , b =2

$\sqrt{3}$

$\frac{1}{\sqrt{3}}$

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

$-\sqrt{3}$

$n\pi +(-1{)}^n\pi /4$

$2n\pi \pm \mathrm{\pi }/3$

$\mathrm{n\pi }-\mathrm{\pi }/4$

$2\mathrm{n\pi } \pm \mathrm{\pi }/4$

-14

0

5

3

10 বর্গ একক

20 বর্গ একক

2 বর্গ একক

5 বর্গ একক

5x -5y -15=0

5x s+ 7y +10 =0

7x + 5y +1=0

5x -7y +1=0

$\log ({\mathrm{e}}^{\mathrm{x}}-{\mathrm{e}}^{-\mathrm{x}})$

$\log ({\mathrm{e}}^{\mathrm{x}}+{\mathrm{e}}^{-\mathrm{x}})$

$\frac{1}{{\mathrm{e}}^{\mathrm{x}}-{\mathrm{e}}^{-\mathrm{x}}}$

$\frac{1}{{\mathrm{e}}^{\mathrm{x}}+{\mathrm{e}}^{-\mathrm{x}}}$

9

2

16

8

9

2

16

8

$e^3$

$e^9-1$

$e^3-1$

$1+e^3$