Trigonometry

Question 1

Pythagorean theorem in acute triangles

Answer 1

c^2<a^2+b^2

Question 2

Pythagorean theorem in obtuse triangles

Answer 2

c^2>a^2+b^2

Question 3

Pythagorean theorem

Answer 3

a^2+b^2=c^2

Question 4

45-45-90

Answer 4

-a=b
-c=a or b *square root of 2

Question 5

30-60-90

Answer 5

-c=shorter leg*2
-longer leg=shorter leg * square root of 3

Question 6

Sine

Answer 6

Opposite/hypotenuse

Question 7

Cosine

Answer 7

Adjacent/hypotenuse

Question 8

Tangent

Answer 8

Opposite/adjacent

Question 9

Law of cosines

Answer 9

C^2=a^2+b^2-2ab cos(c)