Answer:
17
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
the answer is b
Answer:
=
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Given that 
Now integrating

By using integration formula

<u><em>Step(ii):-</em></u>
=
= 
= 
= 
=
<u><em>Final answer:-</em></u>
=
<h3><u>Answer</u> :</h3>
For triangle : A + B + C = π
⇒ A + B = π - C
⇒ cot(A + B) = cot(π - C)
⇒ 
⇒ 
<u>Now 1st part of the given expression</u>!
⇒ 
⇒ 
⇒ 
⇒ 1 - cotB cotC
<u>Similarly 2nd part</u>!
⇒ 1 - cotA cotB
<u>Similarly 3rd part</u>!
⇒ 1 - cotC cotA
<u>LHS</u> :


= <u>RHS</u>
<h3>Hence Proved!!</h3>
Adding 2x on both side
y+2x=1
answer