answersLogoWhite

0


Best Answer

Sin(285) is a number, not an angle.

The reference angle for 285 degrees is 285-360 = -75 degrees.

User Avatar

Wiki User

โˆ™ 2013-01-27 16:12:20
This answer is:
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
User Avatar
Study guides

Algebra

20 cards

A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

โžก๏ธ
See all cards

J's study guide

1 card

What is the name of Steve on minecraft's name

โžก๏ธ
See all cards

Steel Tip Darts Out Chart

96 cards

170

169

168

167

โžก๏ธ
See all cards

Add your answer:

Earn +20 pts
Q: What is the reference angle sin 285?
Write your answer...
Submit
Related questions

The refractive index of water is 1.33 a ray is incident from water on air at an angle of incidence equal to 30 degree what is the angle of refraction in air?

nwater * sin 30=nair *sin(angle of refraction) 1.33*0.5=1*sin(angle of refraction) sin(angle of refractiob)=0.665 angle of refraction inair=41.6 degrees nwater * sin 30=nair *sin(angle of refraction) 1.33*0.5=1*sin(angle of refraction) sin(angle of refractiob)=0.665 angle of refraction inair=41.6 degrees


Can reference angles be negative .like -25 degrees.?

Aight, always let it be etched on your mind that reference angles a.k.a. basic angles, usually symbolized by an alpha symbol, is an angle that lies in Quadrant 1 (reference angle < 90deg) and it starts in an anti/counterclockwise direction of OX. Whatever you do, make sure the reference angle is contained inside Quadrant 1. How to make it inside Quadrant 1? Well, I believe already knew - 180deg - theta (if theta falls in Q2), theta - 180deg (if theta falls in Q3), 360deg - theta (if theta falls in Q4) and you need not perform any operation if theta falls in Q1 - consider it the reference angle as it is < 90deg. On the other hand, let's say you want to find the reference angle for a negative angle, -theta, remember to omit the negative sign of the negative angle when subtracting to find the reference angle. You don't even need to put a -ive sign in front of 360deg or 180deg or any other special angles in which you're subtracting from or by. Just succinctly think it this way, to find the reference angle for a negative angle, the negative angle is mirrored or inversed to start from Q1 in a counterclockwise direction as usual. The reason to this is because if you experiment it yourself this example: sin (-390deg). [First], If you sketch a circle and make a -390deg revolution from QIV (clockwise direction), you'll notice that -390deg falls back in QIV. So, reference angle = (larger angle, i.e. 390deg) - (smaller angle, i.e. 360deg) = 30deg. Notice that I did not write -390 - (-360) because it will yield a -ive 30 instead. [Next], you wanna recall that only cos theta yields a +ive value in QIV so straightaway you know that sin (-390deg) is -ive. [Now for the intricate part,] check the answer for sin(-390deg) on your calculator. It says -0.5 true? Okay now that you know the value is -ive in QIV, include -ive sign in front of (sin 30deg); what do you get? -0.5 also correct? Okay so back to the question why you really don't want a -ive sign in front of reference angle, if you put -(sin -30deg), you'll get a +0.5 instead which is what you don't want. In a nutshell, just drop the -ive sign in front of -ive angles whenever you tryna find their reference angle. :P sorry too long i know! but helpful


What is the reference angle for an angle with the measure of 175 degrees?

The reference angle for an angle with the measure of 175 degrees is 5 degrees


How do you calculate the angle if you know Sin of the angle?

type the value of sine in the calculator and press 2ND SIN for sin-1, or press 2ND SIN for sin-1 and type the value of sine, because -sin(.xxxx) = angle known as inverse sine


What is the difference between sin x and sin -1 x .?

-- sin(x) is a number. It's the sine of the angle 'x'. -- sin-1(x) is an angle. It's the angle whose sine is the number 'x'.


What is the name of a 285 degree angle?

Angle greater than 180 degrees are reflex angles.


Why is 90 degree not taken as the angle of reference in trigonometry?

The angle of reference is in the first quadrant, and 90 degrees angle is not in the quadrant.


How do you find sin of angle?

The sine of an angle is obtained from a right angle triangle. The other two angles are acute, or less than 90 degrees. The sin of the angle is the side opposite the angle divided by the hypotenuse.


What is the relation between the angle of incidence and the angle of refraction and velocity of light?

Sin I/VI = Sin Ref/VRef


What are the basic trigonometric ratios?

Sine(Sin) Cosine(Cos) Tangent(Tan) ---- -Sin of angle A=opposite leg of angle A / hypotenuse -Cos of angle A= Adjacent leg of angle A / Hypotenuse -Tan of angle A= opposite leg of angle A / Adjacent lef of angle A


What is sine equation?

the sine rule, angle (a) and opposite length is eaqual to angle (b) and opposite length. which are also equal to angle (c) and opposite length. Sin A = Sin B = Sin C ------- -------- ---------- a -------- b -------- c


The term angle of deviation is used in reference to?

The term angle of deviation is used in reference to a prism.


What is the reference angle of 90 degrees?

Quadrantals are their own reference angle, so 90 degrees.


How does wave speed relate to refraction?

Sin (Incident angle )/incident speed = sin(refraction angle)/refraction speed.


If the side opposite angle A of a right triangle is 30 meters and the hypotenuse is 90 meters what is the sin of angle a?

sin of angle a = opposite/hypotenuse = 1/3 sin-1(1/3) = 19.47122063 degrees


What is the sin of a 37 degree angle?

sin(37) = 0.6018150232


What is the answer for mathematics 4 page 285?

sin z = 7/25 = 0.28


What is the reference angle of 331?

Since the angle of 331&#8304; is in the fourth quadrant, then the measure of its reference angle in the first quadrant is 360&#8304; - 331&#8304; = 29&#8304; .


What is the reference angle for an angle with a measure of 331degree?

360-331=2929 degrees is your reference angle. Remember your signs, though.


What is a reference angle?

A main angle of refrence.


What is reference line in measuring the angle of incidence and the angle of reflection?

The reference line is the normal (perpendicular) to the surface.


What is the International Klein Blue pantone reference number?

Pantone 285


What is the reference angle for an angle with a measure of 331 degrees?

It is a reflex angle


What is the relationship between the angle of incidence and the angle of reflection?

The Law of Sines is he relationship between the incidence angle and the reflection angle: Sin(I)/Incident velocity = Sin(R)/reflection velocity. If the incident and reflection velocity are the same, then the angles are the same.


If an arc subtend angle of 75 what is angle subtended by it on remaining part of circle?

360 - 75 = 285