Trigonometry

- 0.966

An equation consists of two expressions, one on either side of an equality symbol.

Volume = Base Area times height

chetito

Bound the y values to anything you like, but to keep consistent with cosine and sine you may want to bound them between -1 and 1.

Bound the x values between -180 and 180 (if you're working in degrees) or however quickly you think people will get the point. Every 90 degrees draw a x^3 style line and draw dotted lines to symbolise the asymptotes.

Vectors.

1/3*pi*radius squared*height of cone=volume

4 years exactly.

Assuming you mean -90 degrees, not radians:

tan (-90) = [sin(-90)]/[cos(-90)] = (-1) / 0

You cannot divide by zero. tan (-90) is undefined/does not exist.

No.

Hipparchus

the sine of an angle can't be greater than 1.0

False.

You can identify it by a letter from the alphabet of your choice. Conventionally, if using the Roman alphabet, an upper case (capital) letter is used, or even other symbols.

Alternatively, you can name it using the vertex of the angle and one point on each of the two rays forming the arms of the angle. In this case, the letter fr the vertex must be the middle letter. Thus, the angle PQR is formed where the ray PQ meets the ray QR. This is not the same as angle PRQ.

cos(20 deg) = 0.9397, approx.

Hipparchus, Menelaus, Ptolomy

Well.. It is a very easy question.. The total degrees in a circle are 360. And total number of hours are 12. So we can get the angle going through 1 hour to be 360/12 = 30 degrees.

Tangent is the ratio between perpendicular to the base of the triangle.

Perimeter = Circumference/2+Diameter Perimeter = (pi*14)/2+14 = 35.99114858cm or 36cm correct to two significant figures.

(tanx+cotx)/tanx=(tanx/tanx) + (cotx/tanx) = 1 + (cosx/sinx)/(sinx/cosx)=1 + cos2x/sin2x = 1+cot2x= csc2x

This is a pythagorean identity.

Quadrant I : (+, +)

Quadrant II : (-, +)

Quadrant III : (-, -)

Quadrant IV : (+, -)

a triangular prism

The angle.

(sin x + cos x) / cosx

= sin x / cos x + cosx / cos x

= tan x + 1