Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

What is the value of (\sin^{-1}1)?

Answer and explanation

Correct answer: (\frac{\pi}{2})

Direct answer: option B, \(\frac{\pi}{2}\). The notation \(\sin^{-1}1\) means the principal angle whose sine is 1; it does not mean \(1/\sin1\). On the unit circle and from standard values, \(\sin(\pi/2)=1\). The principal range of inverse sine is \([-\pi/2,\pi/2]\), and \(\pi/2\) lies in it, so \(\sin^{-1}(1)=\pi/2\). Option A, 0, is wrong because \(\sin0=0\). Option C, \(\pi\), is wrong because \(\sin\pi=0\), and it is outside the principal range. Option D, \(-\pi/2\), has sine -1. The common mistake is confusing inverse function with reciprocal. Memory cue: inverse sine asks, ‘which principal angle has this sine?’

Related tags

Inverse Trigonometric FunctionsValueArcsin

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.