Matscelânea

Question 1

7 x 8

Answer 1

56

Question 2

6 x 7

Answer 2

42

Question 3

8 x 9

Answer 3

72

Question 4

4 x 7

Answer 4

28

Question 5

4 x 8

Answer 5

32

Question 6

3 x 8

Answer 6

24

Question 7

Eneágono

Answer 7

9 lados

Question 8

Undecágono

Answer 8

11 lados

Question 9

8 + 6

Answer 9

14

Question 10

6 + 7

Answer 10

13

Question 11

8 + 5

Answer 11

13

Question 12

13 x 13

Answer 12

169

Question 13

14 x 14

Answer 13

196

Question 14

16 x 16

Answer 14

256

Question 15

17 x 17

Answer 15

289

Question 16

18 x 18

Answer 16

324

Question 17

19 x 19

Answer 17

361

Question 18

sin(30º)
sin(π/6)

Answer 18

1/2
À medida que o ângulo aumenta, o seno aumenta.

Question 19

tan(30º)
tan(π/6)

Answer 19

√(3)/3
À medida que o ângulo aumenta, a tangente aumenta.

Question 20

tan(60º)
tan(π/3)

Answer 20

√(3)
À medida que o ângulo aumenta, a tangente aumenta.

Question 21

tan(45º)
tan(π/4)

Answer 21

1
À medida que o ângulo aumenta, a tangente aumenta.

Question 22

tan(90º)
tan(π/2)

Answer 22

∞
À medida que o ângulo aumenta, a tangente aumenta.

Question 23

sin(45º)
sin(π/4)

Answer 23

√(2)/2
À medida que o ângulo aumenta, o seno aumenta.

Question 24

sin(60º)
sin(π/3)

Answer 24

√(3)/2
À medida que o ângulo aumenta, o seno aumenta.

Question 25

sin(90º)
sin(π/2)

Answer 25

1
À medida que o ângulo aumenta, o seno aumenta.

Question 26

sin(0º)
sin(0)

Answer 26

0
À medida que o ângulo aumenta, o seno aumenta.

Question 27

cos(0º)
cos(0)

Answer 27

1
À medida que o ângulo aumenta, o cosseno diminui.

Question 28

cos(90º)
cos(π/2)

Answer 28

0
À medida que o ângulo aumenta, o cosseno diminui.

Question 29

cos(30º)
cos(π/6)

Answer 29

√(3)/2
À medida que o ângulo aumenta, o cosseno diminui.

Question 30

cos(45º)
cos(π/4)

Answer 30

√(2)/2
À medida que o ângulo aumenta, o cosseno diminui.

Question 31

cos(60º)
cos(π/3)

Answer 31

1/2
À medida que o ângulo aumenta, o cosseno diminui.

Question 32

√(2)

Answer 32

1.4142

Question 33

√(3)

Answer 33

1.732

Question 34

√(5)

Answer 34

2.236

Question 35

√(6)

Answer 35

2.4495

Question 36

√(7)

Answer 36

2.64575

Question 37

1/6

Answer 37

0.16666

Question 38

5/6

Answer 38

0.83333

Question 39

1/7

Answer 39

0.142857

Question 40

2/7

Answer 40

0.285714

Question 41

3/7

Answer 41

0.428571

Question 42

4/7

Answer 42

0.571428

Question 43

5/7

Answer 43

0.714285

Question 44

6/7

Answer 44

0.857142

Question 45

1/8

Answer 45

0.125

Question 46

3/8

Answer 46

0.375

Question 47

5/8

Answer 47

0.625

Question 48

7/8

Answer 48

0.875

Question 49

1/9

Answer 49

0.11111

Question 50

1/11

Answer 50

0.090909
Os dois digitos são da tabuada do 9

Question 51

tan(0º)
tan(0)

Answer 51

0
À medida que o ângulo aumenta, a tangente aumenta.

Question 52

Lei dos senos

Answer 52

a/sin(A) = b/sin(B) = c/sin(C) = 2r
Diâmetro da circunferência circunscrita.

Question 53

Lei dos cossenos

Answer 53

a² = b² + c² - 2bc . cos(A)
cos(A) = (b² + c² - a²) / 2bc

Question 54

Área do setor circular

Answer 54

π . r² . (θ / 360º)

Question 55

Comprimento do arco

Answer 55

2 . π . r . (θ / 360º)

Question 56

Área do cone

Answer 56

(π . r²) + (π . r . g)