SMO 2023 Senior Round 1 Question 2
SMO · SMO 2023 Senior Round 1
Which of the following is true?
$\sin105^\circ-\cos105^\circ=\sqrt3/2$
$\sin105^\circ-\cos105^\circ=\sqrt3/\sqrt2$
$\sin105^\circ+\cos105^\circ=1/2$
$\sin105^\circ+\cos105^\circ=1/\sqrt3$
None of the above.