trigonometry

Question 1

what is sin0°

Answer 1

0

Question 2

what is cos0°

Answer 2

1

Question 3

what is tan0°

Answer 3

0

Question 4

what is sin30°

Answer 4

1/2

Question 5

what is cos30°

Answer 5

(root 3)/2

Question 6

what’s tan30°

Answer 6

(root3)/3 or 1/root3

Question 7

what is sin60°

Answer 7

root3/2

Question 8

what is cos60°

Answer 8

1/2

Question 9

what is tan60°

Answer 9

root 3

Question 10

what is sin45°

Answer 10

1/(root2) or root2/2

Question 11

what is cos45°

Answer 11

1/root2 or root2/2

Question 12

what is tan45°

Answer 12

1

Question 13

what is sin90°

Answer 13

1

Question 14

what is cos90°

Answer 14

0

Question 15

what is tan90°

Answer 15

undefined

Question 16

why is tan90° undefined?

Answer 16

because it is 1/0 and you can’t divide by 0

Question 16

why is tan90° undefined?

Answer 16

because it is 1/0 and you can’t divide by 0

Question 17

what is the sine rule

Answer 17

a/sinA = b/sinB

Question 18

what is the cosine rule?

Answer 18

a^2 = b^2 + c^2 - 2bc cosA

Question 19

what is the cosine rule rearranged for cosA?

Answer 19

cosA = b^2 +c^2 - a^2 / 2bc

Question 20

what can the cosine rule be used to calculate?

Answer 20

1. a side when two sides and the angle in between them are known
2. an angle when all three sides are known

Question 21

what can the sine rule be used to calculate?

Answer 21

1. a side when two angles and an opposite side are known

2. an angle when two sides and an opposite angle are known

Question 22

what formula can be used to calculate the area of any triangle?

Answer 22

(1/2)absinC

Question 23

What is ella

Answer 23

The best

Question 24

What is 1+2

Answer 24

3! Well done