Question 389898
looks true to me
Looking at the right side, {{{85}}} degrees is in the 1st quadrant
between {{{0}}} and {{{90}}} degrees, and sin is (+)
Therefore {{{-sin(85)}}} is (-)
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Looking at the left side, {{{-85}}} degrees is in the 4th quadrant
where the sin is (-)
so, the equation says
{{{-.9962 = -.9962}}}