The value of cos(-t) from the given expression is -0.1036
Trigonometry identity
Given the trigonometry identity
sec(t) = -9.65
According to trig identity
sec(t) = 1/cos(t)
cos(-t) = cost
Hence;
cos(t) = -1/9.65
cos(t) = cos(-t) = -0.1036
Hence the value of cos(-t) from the given expression is -0.1036
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