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प्रश्न
Find angle 'A' if :
योग
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उत्तर
From the figure we have
cos A = `(10)/(20)`
cos A = `(1)/(2)`
cos A = cos 60°
A = 60°
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Solution of Right Triangles
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 22: Solution of Right Triangles [Simple 2-D Problems Involving One Right-angled Triangle] - Exercise 22 [पृष्ठ ३४१]
