Inverse Trig Duel: Only 1% can solve this: Cos-¹(x √3) + 2 Sin-¹x =π/2
Prof Yusuf Abdulrahman
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Inverse Trig Duel: Only 1% can solve this: Cos-¹(x √3) + 2 Sin-¹x =π/2
117 просмотров · 4 месяца назад
Prof Yusuf Abdulrahman
954 подписчика
117 просмотров · 4 месяца назад
You’re given one equation and two inverse trig functions fighting for space:
Cos-¹(x√3) + 2sin-¹(x) = π/2
Your job: find all real values of x that make it true.
The catch? You can’t just “algebra” your way out. Domain restrictions from Cos-¹ and Sin-¹ limit what can even be, and the coefficients make this way trickier than it looks. One wrong move and you’ll get extraneous solutions that don’t actually work.
*Skills tested*: inverse trig domains, trigonometric identities, algebraic substitution, checking solutions.
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