Question
Download Solution PDFयदि \(\rm \frac{\sin x-\cos x}{\sin x+\cos x}=\frac{2}{5}\) है, तब \(\rm \frac{1+\cot^2x}{1-\cot^2x}\) का मान कितना है?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFगणना:
\(\rm \frac{\sin x-\cos x}{\sin x+\cos x}=\frac{2}{5}\)
⇒ \(\rm \frac{\sin x+\cos x}{\sin x-\cos x}=\frac{5}{2}\)
योगान्तरानुपात नियम को लागू करने पर, हमें प्राप्त होता है:
⇒ \(\rm \frac{\sin x}{\cos x}=\frac{5 + 2}{5 -2}\)
⇒ tan x = 7/3
⇒ cot x = 3/7
अब, हम मान की गणना निम्नानुसार कर सकते हैं:
\(\rm \frac{1+\cot^2x}{1-\cot^2x}\)
⇒ \(\rm \frac{1+(\frac{3}{7})^2}{1-(\frac{3}{7})^2}\)
⇒ 58/40
⇒ 1.45
∴ सही उत्तर 1.45 है।
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