To find the value of 47★0' by the using the table of natural sines and natural cosines we need to go through the vertical column about the middle of the table 89° to 0° and move upwards till we reach angle 47°. To find the value of cos 47★6' by the using the trigonometric table table of natural sines and natural cosines we need to first find the value of cos 47★0' Therefore, to find the value of sin 33☂8' we need to add the value corresponding to 8’ with the value of sin 33☂0'. Now we know that when the value of an angle increases from 0° to 90°, its sine value increases continually from 0 to 1. Now we move further right along the horizontal line of angle 33° to the column headed by 8' of mean difference and read the figure 194 there this figure of the table does not contain decimal sign. Then we move horizontally to the right at the top of the column headed by 20' and read the figure 0.54951, which is the require value of sin 33☂0'. To find the value of sin 33☂0’ by the using the table of natural sines we need to go through the extreme left vertical column 0° to 90° and move downwards till we reach the angle 33°.
To find the value of sin 33☂8' by the using the trigonometric table table of natural sines we need to first find the value of sin 33☂0'. Then we move horizontally to the left at the bottom of the row above the column 50' and read the figure 0.44098, which is the require value of cos 63★0'.ĥ. Using the trigonometric table, find the value of sin 33☂8'
To find the value of cos 63★0' by the using the table of natural sines and natural cosines we need to go through the vertical column about the middle of the table 89° to 0° and move upwards till we reach angle 63°. Then we move horizontally to the right at the top of the column headed by 30' and read the figure 0.88701, which is the require value of sin 62☃0'.Ĥ. Using table of natural sines and natural cosines, find the value of cos 63★0' To find the value of sin 62☃0' by the using the table of natural sines we need to go through the extreme left vertical column 0° to 90° and move downwards till we reach the angle 62°. We move horizontally to the left at the bottom of the row above the column 0'Īnd read the figure 0.87462, which is the require value of cos 29°.ģ. Using the trigonometric table, find the value of sin 62☃0’ Go through the vertical column about the middle of the table 89° to 0° and move upwards till we reach angle 29°.
Using table of natural cosines, find the value of cos 29°įind the value of cos 29° by the using the table of natural cosines we need to Read the figure 0.81915, which is the require value of sin 55°. We move horizontally to the right at the top of the column headed by 0' and Through the extreme left vertical column 0° to 90° and move downwards till we Using table of natural sines, find the value of sin 55°.įind the value of sin 55° by the using the table of natural sines we need to go Įxamples using the table of natural sines and natural cosines: So, the table is drawn in suchĪ way that we can use the table to find the sin and cosine value of any given angle between 0 ° and 90 °. We know that the sine of any given angle is equal to that of cosine of itsĬomplementary angle. This part of the table is known as Mean Differenceįrom the table we get the sine or cosine value of any given angle correct to In the horizontal row at the extreme right of the table the angles are from 1'
In the horizontal row at the bottom of the table the angles are from 60' to 0' In the horizontal row at the top of the table the angles are from 0' to 60' at In another vertical column about the middle of the table the angles are from In the extreme left vertical column of the table the angles are from 0° to 90° Can observe that the table of natural sines and natural cosines are generallyĭivided into the following parts.
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