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Solve for x : cos ( x 2 + 10 ° ) = √ 3 2 - Mathematics

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प्रश्न

Solve for x : cos `(x/(2)+10°) = (sqrt3)/(2)`

योग

उत्तर

cos `( x/2 + 10°) = (sqrt3)/(2)`

cos `( x/2 + 10°)` = cos 30°

`(x)/(2)` + 10° = 30°

x = 40°

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Trigonometric Equation Problem and Solution
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 23: Trigonometrical Ratios of Standard Angles [Including Evaluation of an Expression Involving Trigonometric Ratios] - Exercise 23 (C) [पृष्ठ २९८]

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सेलिना Concise Mathematics [English] Class 9 ICSE
अध्याय 23 Trigonometrical Ratios of Standard Angles [Including Evaluation of an Expression Involving Trigonometric Ratios]
Exercise 23 (C) | Q 12.08 | पृष्ठ २९८
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