Question

13. Prove :
tan^2Φ/secΦ+1=
1- cosΦ/
cos​

Answer 1

Answer:

Geography is the study of places and the relationships between people and their environments. Geographers explore both the physical properties of Earth's surface and the human societies spread across it. ... Geography seeks to understand where things are found, why they are there, and how they develop and change over time.

Step-by-step explanation:

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Answer 2

Answer:

kon ho tum????????????????????