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September 21, 2014

Homework Help: Trigonometry

Posted by Anon on Saturday, January 1, 2011 at 4:36am.

Please review and tell me if i did something wrong.

Find the following functions correct to five decimal places:

a. sin 22degrees 43'
b. cos 44degrees 56'
c. sin 49degrees 17'
d. tan 11degrees 37'
e. sin 79degrees 23'30'
f. cot 19degrees 0' 25''
g. tan 64degrees 6' 45''
h. cos 29degrees 45' 48''
i. cot 78degrees 45' 50''
j. cos 15degrees 12' 51''

showing my work i got this

a. sin 22 degrees 43 =sin(43 + 43/60 ) = sin(22.71666667) = 0.386174381
b. cos 44 degrees 56 =cos(56 + 56/60 ) = cos(44.93333333) = 0.707929058
c. sin 49 degrees 17 =sin(17 + 17/60 ) = sin(49.28333333) = 0.757944616
d. tan 11 degrees 37 =tan(37 + 37/60 ) = tan(11.61666667) = 0.205573683
e. sin 79 degrees 23 30 =sin(23 + 23/60 + 30/3600) = sin(79.39166667) = 0.982908584
f. cot 19 degrees 0 25 =cot(0 + 0 + 25/3600) = cot(19.00694444) = 2.903067794
g. tan 64 degrees 6 45 =tan(6 + 6/60 + 45/3600) = tan(64.1125) = 2.060562685
h. cos 29 degrees 45 48 =cos(45 + 45/60 + 48/3600) = cos(29.76333333) = 0.868083316
i. cot 78 degrees 45 50 =cot(45 + 45/60 + 50/3600) = cot(78.76388889) = 0.198660382
j. cos 15 degrees 12 51 =cos(12 + 12/60 + 51/3600) = cos(15.21416667) = 0.964951637

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