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 type of value does sin² θ + cos² θ have?

Answer and explanation

Correct answer: Constant

The governing concept is the fundamental Pythagorean identity of trigonometry: sin² θ + cos² θ = 1 for every real angle θ. The expression therefore always evaluates to the fixed number 1, independent of θ, so it has a constant value. Option D is correct. It is not variable because changing θ changes the individual sine and cosine terms but their squared sum remains unchanged. It is not negative because 1 is positive, and it is not undefined because sine and cosine are defined for every real angle. This identity can also be seen from the unit circle, where the coordinates satisfy x² + y² = 1.

Related tags

Trigonometric-FunctionsPythagorean-IdentityConstant-ValueTrigonometric Functions And Their PropertiesTrigonometric FunctionsMathematicsClass 12 Mcq

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.