**Finding Exact Values of Trig Functions Using Reference**

This angle 9', called a reference angle, can be used to find the trigonometric values of any angle 9 Concept Reference Angle Rules If 0 is an angle in standard position, its reference angle 0' is the acute angle formed by the terminal side of 0 and the x-axis.... This angle 9', called a reference angle, can be used to find the trigonometric values of any angle 9 Concept Reference Angle Rules If 0 is an angle in standard position, its reference angle 0' is the acute angle formed by the terminal side of 0 and the x-axis.

**SOLUTION How do I use reference angles to find the exact**

So the reference angle we are working with is a 60 degree angle. The side across from the 60 is sqrt(3). the side across from the 30 is 1, and the side across from the right angle, which is the hypotenuse, is 2. The sin of an angle relates the side opposite the angle to hypotenuse in a ratio. Keep in mind that the x values in this quadrant are negative as are the y values. The hypotenuse is... 28/10/2010Â Â· Best Answer: First of all find the reference angle. Then use the sign of that angle in the correct quadrant to evaluate. cos 330Â° Reference angle = 30Â°, Quadrant IV cos 30Â° = âˆš3/2 cos + in Q IV cos 330Â° = cos 30Â° = âˆš3/2 ----- cos 150Â° Quadrant II Same reference angle But cos - in Q II cos 150

**How to Find Trigonometric Ratios Based On Reference Angle**

Knowing that the reference angle is 60 degrees, you can then draw a triangle, which will be a special triangle of 30-60-90, which you should know the ratios for. The sin â€¦ how to get subtitles kodi genesis Trig Ratios of General Angles Date_____ Period____ Use a calculator to find each. Round your answers to the nearest ten-thousandth. 1) cos 101 Â° 2) cos 310 Â° 3) sin 105 Â° 4) sin âˆ’305 Â° 5) sin âˆ’228 Â° 6) sin âˆ’120 Â° 7) cos âˆ’70 Â° 8) cos 140 Â° Find the exact value of each trigonometric function. Some may be undefined. 9) tan 2 Ï€ 3 10) sec âˆ’ 3Ï€ 4 11) cos 11 Ï€ 6 12) cot 5Ï€ 3 13

**Find the exact value of cos 150°. How to solve for a**

In the module, Introductory Trigonometry âˆ’ Years 9-10, we defined the three standard trigonometric ratios sine, cosine and tangent of an angle Î¸, called the reference angle, in a right-angled triangle. how to find out if i have a criminal record 28/10/2010Â Â· Best Answer: First of all find the reference angle. Then use the sign of that angle in the correct quadrant to evaluate. cos 330Â° Reference angle = 30Â°, Quadrant IV cos 30Â° = âˆš3/2 cos + in Q IV cos 330Â° = cos 30Â° = âˆš3/2 ----- cos 150Â° Quadrant II Same reference angle But cos - in Q II cos 150

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### SOLUTION How do I use reference angles to find the exact

- Find the exact value of cos 150°. How to solve for a
- Finding Exact Values of Trig Functions Using Reference
- How to Find Trigonometric Ratios Based On Reference Angle
- Find the exact value of cos 150°. How to solve for a

## How To Find Exact Sin Ratio Reference Angle

28/10/2010Â Â· Best Answer: First of all find the reference angle. Then use the sign of that angle in the correct quadrant to evaluate. cos 330Â° Reference angle = 30Â°, Quadrant IV cos 30Â° = âˆš3/2 cos + in Q IV cos 330Â° = cos 30Â° = âˆš3/2 ----- cos 150Â° Quadrant II Same reference angle But cos - in Q II cos 150

- What is the exact value of #Cos 135#? What is the value of #sin -45^@#? How do you find the trigonometric functions of values that are greater than #360^@#? How do you use the reference angles to find #sin210cos330-tan 135#? How do you know if #sin 30 = sin 150#?
- Exact Trig Values of Special Angles Date_____ Period____ Find the exact value of each trigonometric function. 1) tan Î¸ x y 60 Â° 2) sin Î¸ x y 225 Â° 3) sin Î¸ x y 90 Â° 4) cos Î¸
- 28/10/2010Â Â· Best Answer: First of all find the reference angle. Then use the sign of that angle in the correct quadrant to evaluate. cos 330Â° Reference angle = 30Â°, Quadrant IV cos 30Â° = âˆš3/2 cos + in Q IV cos 330Â° = cos 30Â° = âˆš3/2 ----- cos 150Â° Quadrant II Same reference angle But cos - in Q II cos 150
- What is the exact value of #Cos 135#? What is the value of #sin -45^@#? How do you find the trigonometric functions of values that are greater than #360^@#? How do you use the reference angles to find #sin210cos330-tan 135#? How do you know if #sin 30 = sin 150#?