Solve for x : sin2 x + sin2 30° = 1 - Mathematics

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Sum

Solve for x : sin2 x + sin2 30° = 1

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Solution

sin2x + sin230° = 1
sin2x  = 1 –sin30°

sin2x = 1 – `(1)/(4)`

sin2x = `(sqrt3)/(2)`

x = 60°

Concept: Trigonometric Equation Problem and Solution
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APPEARS IN

Selina Concise Mathematics Class 9 ICSE
Chapter 23 Trigonometrical Ratios of Standard Angles [Including Evaluation of an Expression Involving Trigonometric Ratios]
Exercise 23 (C) | Q 12.09 | Page 298
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