Q3 - Quiz 1 Review

1. Simplify: √75

• 5√3

• 3√5

• 5√10

• 15√3

Answer explanation

2. Simplify: 2√5* 3√7

• 5√12

• 6√35

• 6√12

• 5√35

Answer explanation

Radicands multiply with radicands

3. Solve for x.

• 12√2

• 12√3

• 12

• 24

Answer explanation

45-45 triangle--legs are equal.

4. Solve for y.

• 12√2

• 12√3

• 12

• 24

Answer explanation

45-45 triangle--missing hyptense

hyp=leg x √2

5. Solve for x.

• 5√2

• 5√3

• 5

• 10

Answer explanation

30-60 triangle--given short, find long.

Long = short x √3

6. Solve for y.

• 5√2

• 5√3

• 5

• 10

Answer explanation

Given 30-60 triangle--given short, find hyp.

hyp = short x 2

6. Solve for y.

• 5√2

• 5√3

• 5

• 10

7. Select all that are true:

• cos(x) = 1/3

• sin(x) = 2/3

• tan(x) = 2/1

• sin(x) = 1/3

• cos(x) = 2/3

Answer explanation

Soh-Cah-Toa

8. Which trig function makes the most sense to solve for x?

• sine

• cosine

• tangent

Answer explanation

***Soh***-Cah-Toa

9. Solve for x.

• x = 1.2

• x = 2.2

• x = 65.2

Answer explanation

Cross multiply.

On calculator:

9 x 14 SIN EQULAL