1. Using exact values, fine the numerical value of :
a. sin 30* cos 240* + sin 210* sin 300*
b. tan 225* + tan (-45*)
2. Express each of the following as the same function of a positive acute angle:
a. cos 112* 33'
b. tan 310*
c. cot 138* 15' 10"
d. sin (-140*)
3. Express eash as a function of 0:
a. sin (270* + 0)
b. tan 310*
c. tan (810* + 0)
d. sin (0-180*)
4. find the value of:
a. log sin 62* 22' 33"
b. log cot 28* 13' 17"
c. log cos 125* 15' 23"
d. log tan 78* 45' 50"
5. find the acute angle A, to the nearest second when:
a. log cos A = 9.12575
b. log sin A = 9.91655
c. log cot A = 0.11975
d. log tan A = 0.06323
2007-07-03
21:31:58
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Mathematics