Math, asked by raj1132, 1 year ago

Prove this question..how it is solve?

Attachments:

Answers

Answered by aman190k
1
Hey here is your answer
plzz mark me as brainlist
Attachments:

raj1132: I have another problem
raj1132: How can I mark
raj1132: Plz add me on whatus up +9779819252785
raj1132: I need your extra help in math
Answered by geetsharu1234
0
 let me try to do this question:

(1-sinФ)(1+sinФ)
-------------------------  
(1-cosФ)(1+cosФ)

by using identity (a²-b²)=(a+b)(a-b)

(1²-sin²Ф)           cos²Ф
-------------      =  ---------    =cot²Ф                  using identity(1-sin²Ф)=cos²Ф
(1²-cos²Ф)            sin²Ф                                             and (1-cos²Ф)=sin²Ф

                                                                     cos²Ф
                                                                  ----------   =cot²Ф
                                                                    sin²Ф
Similar questions