Final Ch. 9

Question 1

Pythagorean thrm:
Where _ and _ are the legs and _ is the hypotenuse.

Answer 1

A and b,c

Question 2

a^2 + b^2 = c^2

Answer 2

Right triangle

Question 3

a^2 + b^2 > c^2

Answer 3

Acute

Question 4

a^2 + b^2 < c^2

Answer 4

Obtuse

Question 5

SohCahToa:
Steps:
1. Find ____.
2. Label __,___,___.
3. Pick ____. Function
4. Set up ___ function.
5. Solve for _____.

Answer 5

1. Theta
2. H,O,A
3. Trig.
4. Trig.
5. Variable

Question 6

Find sides:
1. Sin:
2. Cos:
3: tan:

Answer 6

1. O/H
2. A/H
3. O/A

Question 7

Find angles:
1. Sin^____(__/___) = ___.

Answer 7

1. -1, O/H, theta.

Question 8

Special right triangles:
45-45-90 ∆: Hypotenuse= ____ × √____.
H = L× √___
30-60-90: hypotenuse = _____ leg × 2
- longer leg: ____ leg × √____.
- H = SL(___)
- LL = SL(√___)

Answer 8

• Leg × √2.
• 2
• shorter
  -shorter, √3
• (2)
• 3