9.4 - 9.5

Question 1

30* - 60* - 90* Triangle

Answer 1

In a 30 60 90 triangle, the hypotenuse is twice as long as the shorter leg and the longer leg is squarer root 3 times as long as the shorter leg.

Hyp= 2• short 
Long= short • /3\

Question 2

Trigonometry

Answer 2

The study of the relationships between the sides and angles of right triangles.

Question 3

Trigometric ratio

Answer 3

The ratio of any 2 side lengths of a right triangle

Question 4

Sine of angle A

Answer 4

Sin A= side opposite

Question 5

Cosine of angle A

Answer 5

Cos A= side adj <a></a>

Question 6

Tangent of angle A

Answer 6

Side opposite

Question 7

45* - 45* - 90* Triangle

Answer 7

In a 45* - 45* - 90* triangle, the hypotenuse is square- root 2 times as long as each leg.

Hyp= leg • square root 2