TMUA 2018 Paper 1 Q20 — Worked Solution

P1·Trigonometry·5.5Official · 2018 · Q20

pairing-trickcomplementary-anglessum-of-trig-squares

Find the value of

sin^{2} 0° + sin^{2} 1° + sin^{2} 2° + sin^{2} 3° + \dots + sin^{2} 87° + sin^{2} 88° + sin^{2} 89° + sin^{2} 90°.

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