A Course of Mathematics: For the Use of Academies as Well as Private Tuition, Volume 2Campbell, 1812 |
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Page 7
... half the circumfe- rence whence it follows that an obtuse angle ( measured by an arc greater than a quadrant ) has the same sine and cosine as its supplement ; the cosine however , being reckoned sub- tractive or negative , because it ...
... half the circumfe- rence whence it follows that an obtuse angle ( measured by an arc greater than a quadrant ) has the same sine and cosine as its supplement ; the cosine however , being reckoned sub- tractive or negative , because it ...
Page 11
... half . For , substituting for cos A its value ( R2 2 sin a √ ( R2 — sin2 a ) . This squared R - there will arise sin 2a = gives R2 sin2 2A = 4R2 sin2 A 4 sin1 A .. Here taking sin A for the unknown quantity , we have a quad- Here we ...
... half . For , substituting for cos A its value ( R2 2 sin a √ ( R2 — sin2 a ) . This squared R - there will arise sin 2a = gives R2 sin2 2A = 4R2 sin2 A 4 sin1 A .. Here taking sin A for the unknown quantity , we have a quad- Here we ...
Page 12
... half an arc or angle will be of use to us as we proceed . 21. If the values of sin ( A + B ) and sine ( △ · B ) , given by equa . v , be added together , there will result sin ( A + B ) + sin ( A — B ) = sin A 2 sin A. cos B R ; whence ...
... half an arc or angle will be of use to us as we proceed . 21. If the values of sin ( A + B ) and sine ( △ · B ) , given by equa . v , be added together , there will result sin ( A + B ) + sin ( A — B ) = sin A 2 sin A. cos B R ; whence ...
Page 13
... half sum and the half difference of these equations will give respectively A = } ( A ′ + B ′ ) , and B = ¿ ( A ′ — B ′ ) . Putting these values of A and B , in the expressions of sin a COS B , Sin B.Cos A , COS A. COS B , sin A sin B ...
... half sum and the half difference of these equations will give respectively A = } ( A ′ + B ′ ) , and B = ¿ ( A ′ — B ′ ) . Putting these values of A and B , in the expressions of sin a COS B , Sin B.Cos A , COS A. COS B , sin A sin B ...
Page 18
... half a right angle , or it will be measured by an arc greater than of the circumfer- ence , or than 0. Then ... half the given angle ; the sum will be the log tan of half the difference of the other two angles of the plane triangle . 39 ...
... half a right angle , or it will be measured by an arc greater than of the circumfer- ence , or than 0. Then ... half the given angle ; the sum will be the log tan of half the difference of the other two angles of the plane triangle . 39 ...
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absciss altitude axis ball base beam becomes body centre of gravity circle column consequently Corol correct fluent cosine cubic curve cycloid cylinder denote density descending determine diameter direction distance earth elevation equa equal equation equilibrio EXAM expression feet find the fluent fluid force gives greatest Hence horizontal hyperbola inches inclined plane length lever logarithm measured motion moving nearly oblique ordinate parabola parallel pendulum perp perpendicular pressure prob PROBLEM projectile prop proportional PROPOSITION quantity radius ratio rectangle resistance right angles right line roots Scholium sides sin² sine solid angle space specific gravity spherical excess spherical triangle square supposed surface tangent theorem theref tion trapezium variable velocity vertical vibrations weight whole
Popular passages
Page 437 - Or, by art. 3 14 of the same, the pressure is equal to the weight of a column of the fluid...
Page 13 - In any plane triangle, the sum of any two sides is to their difference, as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Page 155 - MECHANICAL POWERS are certain simple instruments employed in raising greater weights, or overcoming greater resistance than could be effected by the direct application of natural strength. They are usually accounted six in number; viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw.
Page 241 - Weigh the denser body, and the compound mass separately, both in water, and out of it ; then find how much each loses in water, by subtracting its weight in water from its weight in air ; and subtract the less of these remainders from the greater. Then...
Page 240 - As the weight lost in water is to the whole, or absolute weight ; so is the specific gravity of water ' " to "the specific gravity 'of the body . 2.
Page 155 - LBVER is any inflexible rod, bar, or beam, which serves to raise weights, while it is supported at a point by a fulcrum or prop, which is the centre of motion. The lever is supposed to be void of gravity or weight, to render the demonstrations easier and simpler.
Page 451 - It has been found, by these experiments, that no difference is caused in the velocity, or range, by varying the weight of the gun, nor by the use of wads, nor by different degrees of ramming, nor by firing the charge of powder in different parts of it.
Page 82 - The surface of a spherical triangle is measured by the excess of the sum of its three angles above two right angles, multiplied by the tri-rectangular triangle.
Page 304 - ... small parts, but as generated by continued motion, by means of which they increase or decrease ; as a line by the motion of a point ; a surface by the motion of a line ; and a solid by the motion of a surface.
Page 128 - Forces, are true in the Motions of Bodies freely descending by their own Gravity; namely, that the velocities are as the Times, and the Spaces as the Squares of the Times, or as the Squares of the Velocities. FOR, since the force of gravity is uniform, and constantly the same, at all places near the earth's surface, or at nearly the same...