9.1 Delta Math Practice Ex.

9.1 Delta Math Practice Ex.

Delta Math Examples.

Poll

How did your winter storm go?

• Car troubles

• No water

• No electricity

• No internet

• Couldn't work

Find the Coordinate on Unit Circle

Multiple Choice

Which Quadrant is point P in?

• I

• II

• III

• IV

Multiple Select

What can we say about point P?

• we know the y value (vertical leg)

• x must be positive

• x must be negative

• x is the leg of a right triangle

• The hypotenuse (or radius) equals 1

Multiple Choice

How can we find x (the missing leg) ?

• Pythagorean theorem

• Logarithmic Functions

• With a snow shovel

Signs of Trig Functions

Multiple Select

In which quadrants is sine positive? (the y coordinate)

• I

• II

• III

• IV

Multiple Choice

How do you find tangent?

• y/x

• x/y

• -x

• -y

Multiple Select

In which quadrants is tangent negative?

• I

• II

• III

• IV

Multiple Choice

In which quadrant is

sine > 0

tangent < 0

• I

• II

• III

• IV

Open Ended

Riddle:

I am tall when I am young and

I am short when I am old?

What am I?

Identifying reciprocal ratios

SOH CAH TOA

Multiple Choice

What's the reciprocal of sine?

• secant

• cosecant

• cotangent

• sine

Multiple Choice

What's the reciprocal of cosine?

• secant

• cosecant

• cotangent

• sine

Multiple Choice

What's the reciprocal of tangent?

• secant

• cosecant

• cotangent

• sine

SOH CAH TOA

SOH CAH TOA

Multiple Choice

Find csc A

• 80/18

• 80/82

• 18/80

• 82/80

Find Trig Ratio Given Another (all six)

Multiple Choice

What's the value of the hypotenuse?

• $\sqrt{85}$

• $6$

Multiple Choice

What's the value of the opposite side?

• $\sqrt{85}$

• $6$

Multiple Choice

How do you find the missing side? (x)

• Pythagorean Thm.

• Quadratic formula

• socially distancing

Multiple Choice

Will x equal

positive seven

or negative seven?

(in quadrant I)

• positive

• negative

Doakes & Sheilah

Concert Pianist Yuja Wang