Without using a calculator, find all the solutions of
cos
(
t
)
=
0
\displaystyle {\cos{{\left({t}\right)}}}={0}
cos
(
t
)
=
0
where
−
π
<
t
≤
π
\displaystyle -\pi<{t}\le\pi
−
π
<
t
≤
π
.
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\displaystyle
Enter your answer as a list of values separated by commas: Example: -4, 3, 2
Enter each value as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)
Enter DNE for Does Not Exist, oo for Infinity