i got answers but i am confused in -and +
which i couldn't solve it
please help me a)0.9372
b)-0.4686
c)-0.9372
d)0.4686
please help me is it the right answer?>
cos(-x) = cos(x)
cosֿ¹(cos(-0.9372))
= 0.9372
Note that
0 ≤ cosֿ¹(x) ≤ π
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Verified answer
cos(-x) = cos(x)
cosֿ¹(cos(-0.9372))
= 0.9372
Note that
0 ≤ cosֿ¹(x) ≤ π