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If (\sin x=\frac{3}{5}) and (x) is in the first quadrant, what is the value of (\cos x)?यदि (\sin x=\frac{3}{5}) और (x) प्रथम चतुर्थांश में है, तो (\cos x) का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (\frac{4}{5})(\frac{4}{5})
Using (\sin^2 x+\cos^2 x=1), (\cos x=\frac{4}{5}). In the first quadrant, (\cos x) is positive.(\sin^2 x+\cos^2 x=1) से (\cos x=\frac{4}{5}) मिलता है। प्रथम चतुर्थांश में (\cos x) धनात्मक होता है।
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