यदि tan A =  हो, तो sin A + cos A का मान क्या है?

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Bihar STET Paper I: Mathematics (Held In 2019 - Shift 1)
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Option 1 :
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Bihar STET Paper 1 Mathematics Full Test 1
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गणना:

दिया गया है, tan A = 7/24, इसका अर्थ है कि:

विपरीत भुजा (sin A) / आसन्न भुजा (cos A) = 7/24

पाइथागोरस प्रमेय द्वारा, 

कर्ण = √((विपरीत भुजा)2 + (आसन्न भुजा)2)

कर्ण = √((7)2 + (24)2)

कर्ण = √(49 + 576)

कर्ण = √(625)

कर्ण = 25

इसलिए, अब हमारे पास 7 (विपरीत), 24 (आसन्न), और 25 (कर्ण) भुजाओं वाला एक समकोण त्रिभुज है।

sin A = विपरीत/कर्ण = 7/25

cos A = आसन्न/कर्ण = 24/25

तब, sin A + cos A = 7/25 + 24/25 = 31/25

इसलिए, sin A + cos A का मान 31/25 है।

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