Trignometry

Question 1

SOHCAHTOA

ONLY IN RIGHT ANGLED TRIANGLES

Answer 1

Sine = opposite / hypotenuse 
Cosine = adjacent / hypotenuse
Tangent = opposite / adjacent

Question 2

Area of scalene triangles

Answer 2

Area = 0.5 x length A x length B x sin (angle between a and b)

Question 3

Figuring out the length/angle of a side/angle with other lengths and angles given

Answer 3

sin a/A = sin b/B = sin c/C

Question 4

Angle when other sides are given

Answer 4

CosA = (b^2 + c^2 - a^2) / 2bc

Question 5

Side when sides and angle are given

Answer 5

a^2 = b^2 + c^2 - 2bcCosA