Concept-wise Practice

pythagorean-identity MCQ Questions for Class 11

pythagorean-identity se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

2 questions tagged with pythagorean-identity.

यदि \(\theta\) प्रथम चतुर्थांश में है और \(\sin \theta=\frac{5}{13}\), तो \(\cos \theta\) का मान क्या होगा?

If \(\theta\) is in the first quadrant and \(\sin \theta=\frac{5}{13}\), what is \(\cos \theta\)?

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Correct Answer

A. \(\frac{12}{13}\)

Step 1

Concept

\( \cos^2 \theta=1-\sin^2 \theta=\frac{144}{169}\), and in the first quadrant it is positive. In exams do not forget quadrant sign.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{12}{13}\). \( \cos^2 \theta=1-\sin^2 \theta=\frac{144}{169}\), and in the first quadrant it is positive. In exams do not forget quadrant sign.

Step 3

Exam Tip

\(\cos^2 \theta=1-\sin^2 \theta=\frac{144}{169}\) और प्रथम चतुर्थांश में मान धनात्मक है। परीक्षा में quadrant sign न भूलें।

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मूल सर्वसमिका \(\sin^2 \theta+\cos^2 \theta\) का मान क्या होता है?

What is the value of the basic identity \(\sin^2 \theta+\cos^2 \theta\)?

Explanation opens after your attempt
Correct Answer

C. (1)

Step 1

Concept

\(\sin^2 \theta+\cos^2 \theta=1\) is a basic identity. Use it as a base formula throughout the chapter.

Step 2

Why this answer is correct

The correct answer is C. (1). \(\sin^2 \theta+\cos^2 \theta=1\) is a basic identity. Use it as a base formula throughout the chapter.

Step 3

Exam Tip

\(\sin^2 \theta+\cos^2 \theta=1\) मूल सर्वसमिका है। इसे हर अध्याय में आधार सूत्र की तरह प्रयोग करें।

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AI Video Prompt 16:9 + 9:16

Is question ka premium MCQ video banane ke liye ready prompt. Copy karke Sora, Runway, Canva AI, CapCut AI, ChatGPT video workflow ya editor me use karein.

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