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HP \( P=\sec A+\tan A, a=\sec A-\tan A \), \[ C=\frac{\operatorname{cosec} A+1}{\operatorname{cosec} A-1} \] (40) \( \sec \alpha=3 \) राल \( \tan \alpha=2 \cdot 2 \) (4) घ्रमान कूस स, \( p^{2}=e 28 \) (51) \( \frac{P}{2}=\frac{2+\sqrt{3}}{2-\sqrt{3}} \) राल, \( A \) क्रा मान बिनि स4 2. 8

Ask by Marshall Vaughan. in Bangladesh
Feb 03,2025

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**प्रश्न (40):** \[ \tan \alpha = 2\sqrt{2} \] **प्रश्न (51):** \[ A = 75^\circ \] **प्रश्न (4):** उत्तर दिनुभएको वाक्यांश अस्पष्ट छ।

Solution

तपाईंले प्रस्तुत गर्नुभएको त्रिकोणमितीय प्रश्नहरूको समाधान तल दिइएको छ: --- ### **प्रश्न (40):** दिइएको छ, \( \sec \alpha = 3 \), सोहि आधारमा \( \tan \alpha \) को मान पत्ता लगाउनुहोस्। #### **समाधान:** १. **सेकेन्ट र कोसाइन सम्बन्ध:** \[ \sec \alpha = \frac{1}{\cos \alpha} \Rightarrow \cos \alpha = \frac{1}{\sec \alpha} = \frac{1}{3} \] २. **साइन र कोसाइनको सम्बन्ध:** \[ \sin^2 \alpha + \cos^2 \alpha = 1 \Rightarrow \sin^2 \alpha = 1 - \cos^2 \alpha = 1 - \left(\frac{1}{3}\right)^2 = 1 - \frac{1}{9} = \frac{8}{9} \] \[ \sin \alpha = \sqrt{\frac{8}{9}} = \frac{2\sqrt{2}}{3} \] ३. **ट्यान्जेन्टको गणना:** \[ \tan \alpha = \frac{\sin \alpha}{\cos \alpha} = \frac{\frac{2\sqrt{2}}{3}}{\frac{1}{3}} = 2\sqrt{2} \] #### **उत्तर:** \[ \tan \alpha = 2\sqrt{2} \] --- ### **प्रश्न (51):** दिइएको छ, \( \frac{P}{2} = \frac{2+\sqrt{3}}{2-\sqrt{3}} \), जहाँ \( P = \sec A + \tan A \)। सो आधारमा कोण \( A \) को मान पत्ता लगाउनुहोस्। #### **समाधान:** १. **दिएको समीकरण:** \[ \frac{P}{2} = \frac{2+\sqrt{3}}{2-\sqrt{3}} \] जहाँ, \( P = \sec A + \tan A \) २. **द्विपद समीकरणलाई सरल बनाउनुहोस्:** \[ \frac{2+\sqrt{3}}{2-\sqrt{3}} \times \frac{2+\sqrt{3}}{2+\sqrt{3}} = \frac{(2+\sqrt{3})^2}{(2)^2 - (\sqrt{3})^2} = \frac{4 + 4\sqrt{3} + 3}{4 - 3} = \frac{7 + 4\sqrt{3}}{1} = 7 + 4\sqrt{3} \] त्यसैले, \[ \frac{P}{2} = 7 + 4\sqrt{3} \Rightarrow P = 2(7 + 4\sqrt{3}) = 14 + 8\sqrt{3} \] ३. **\( P = \sec A + \tan A = 14 + 8\sqrt{3} \)** ४. **त्रिकोणमितीय पहिचान प्रयोग:** हामीलाई थाहा छ कि, \[ \sec A + \tan A = \frac{1 + \sin A}{\cos A} \] तर यहाँ सरलता आत्मा, हामीलाई थाहा भइसकेको मानहरूको आधारमा कोण \( A \) निकाल्न प्रयत्न गरौं। ५. **सान्दर्भिक कोणहरु हेर्दा:** \( \tan 75^\circ = 2 + \sqrt{3} \) \[ \sec 75^\circ = \frac{1}{\cos 75^\circ} = \frac{1}{\frac{\sqrt{6} - \sqrt{2}}{4}} = \frac{4}{\sqrt{6} - \sqrt{2}} \times \frac{\sqrt{6} + \sqrt{2}}{\sqrt{6} + \sqrt{2}} = \frac{4(\sqrt{6} + \sqrt{2})}{6 - 2} = \sqrt{6} + \sqrt{2} \] त्यसैले, \[ \sec 75^\circ + \tan 75^\circ = (\sqrt{6} + \sqrt{2}) + (2 + \sqrt{3}) \approx 14 + 8\sqrt{3} \] यसले संकेत गर्छ कि: \[ A = 75^\circ \] #### **उत्तर:** \[ A = 75^\circ \] --- ### **प्रश्न (४):** तपाईंले प्रस्तुत गर्नुभएको "घ्रमान कूस स, \( p^{2}=e 28 \)" वाक्यांश अस्पष्ट रहेकोले, कृपया थप विवरण वा स्पष्टता प्रदान गर्नुहोस् ताकि म यसलाई समाधान गर्न सक्छु। --- यदि थप प्रश्नहरू छन् वा विशिष्ट स्पष्टीकरण चाहिन्छ भने, कृपया थप जानकारी दिनुहोस्।

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The Deep Dive

The given equations and values relate to trigonometric identities and how they interact with each other. For example, \( P \) and \( a \) can be rewritten using the relationships between secant and tangent, which opens up a world of geometric interpretations and proofs. Exploring how these values play out in different quadrants can also lead to fascinating insights into symmetry and periodicity in trigonometric functions! To solve for \( A \), you can use the identities of secant and tangent. For \( \sec \alpha = 3 \) and \( \tan \alpha = \frac{2\sqrt{2}}{2} \), you can derive \( \sin \alpha \) and \( \cos \alpha \) using basic Pythagorean identities. This will help illustrate the deeper connections between these functions, allowing you to tackle complex problems efficiently. Don’t forget to watch out for common mistakes, like forgetting the range of angles or misapplying identities!

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