Question
Express $\cos75^\circ+\cot75^\circ$ in terms of angles between 0° and 30°.
✓
Answer
Give that: $\cos75^\circ+\cot75^\circ$
$=\cos75^\circ+\cot75^\circ$
$=\cos(90^\circ-15^\circ)+\cot(90^\circ-15^\circ)$
$=\sin15^\circ+\tan15^\circ$
Hence the correct answer is $\sin15^\circ+\tan15^\circ$ $$
$=\cos75^\circ+\cot75^\circ$
$=\cos(90^\circ-15^\circ)+\cot(90^\circ-15^\circ)$
$=\sin15^\circ+\tan15^\circ$
Hence the correct answer is $\sin15^\circ+\tan15^\circ$ $$
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