Explanation

The trigonometric identity is:

Sec²θ - Tan²θ = 1

Explanation

Effective teachers treat all students not equally.

Because every student has a unique learning style, background, and set of needs, effective teachers recognize these differences and respond to them appropriately.

Explanation

Assessment helps the teacher gauge a child's understanding, interest, and attention informally or formally.

It includes activities like quizzes, observations, and discussions to improve learning.

Explanation

The National Professional Standards for Teachers in Pakistan include the following 10 standards:

1. Subject Matter Knowledge
2. Human Growth and Development
3. Knowledge of Islamic Ethical Values/Social Life Skills
4. Instructional Planning and Strategies
5. Assessment
6. Learning Environment
7. Effective Use of Information, Communication Technology
8. Collaboration and Partnership
9. Continuous Professional Development and Code of Conduct
10. Teaching of English as Second/Foreign Language (ESL/EFL)

Explanation

15 divided by -3:

15 ÷ (-3) = -5

Explanation

In inverse proportion, when one quantity increases, the other decreases in the same ratio.

Their product remains constant: x × y = constant.

Explanation

Always means ہر وقت یا ہر موقع پر

Never means کسی وقت نہیں

Explanation

Cost per bag = $10.32 ÷ 8 = $1.29

For 20 bags: $1.29 × 20 = $25.80

Explanation

Explanation

Creating web pages is not a function of an operating system; it is done using specialized software like HTML editors or web development tools.

An operating system manages hardware, software, file storage, and application execution.