🇬🇧 A-LEVEL MATHS #8 – Evaluate cosec(120°) step by step
0:32
YouTubeMaths 2SPI ( M2SPI)
🇬🇧 A-LEVEL MATHS #8 – Evaluate cosec(120°) step by step
🎯 What you'll learn in this video: Step-by-step evaluation of cosec(120°), leaving the answer in exact form. 🧪 We cover: Definition: cosec(theta) = 1 / sin(theta) Exact value of sin(120°) using known triangle values Substitution into the cosec formula Final result: 2 / sqrt(3) Rationalising the denominator: (2 * sqrt(3)) / 3 🔍 Who is ...
222 views3 months ago
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