Problem:
Suppose that a and b are coterminal angles. Also suppose that c and d are coterminal angles. Is it true that a + c is coterminal with b + d. If true it needs to be proven. If not it needs a counterexample.
Im not sure what is meant by this exactly.
2007-10-30 10:11:18 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
yes...
a = 120
b = -240
c = 180
d = -180
a+c = 300
b+d = 420
a+c is coterminal with b+d...
2007-10-30 10:16:20 · answer #1 · answered by sayamiam 6 · 0⤊ 1⤋
To find coterminal angles in Radians, subtract or add 2ㅠ (or an equivalent value). For this one you would add/subtract 6ㅠ/3. 17ㅠ/3 - 6ㅠ/3 = 11ㅠ/3 You could subtract 6ㅠ/3 again, to get 5ㅠ/3, which is another positive coterminal angle. Now subtract 6ㅠ/3 again. 5ㅠ/3 - 6ㅠ/3 = -ㅠ/3 Once again, you could keep subtracting 6ㅠ/3, but you don't need to.
2016-04-11 03:34:15 · answer #2 · answered by Anonymous · 0⤊ 0⤋
< a = x and
You will not be able to find a counterexample.
2007-10-30 10:30:48 · answer #3 · answered by ironduke8159 7 · 0⤊ 0⤋