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const2013 [10]
2 years ago
9

Sin^2 a/2 - sin a/2 + 1/4 = 0​

Mathematics
1 answer:
zimovet [89]2 years ago
3 0

Answer:

<u>a = 60° or π/3</u>

Step-by-step explanation:

<u>Given :-</u>

sin² a/2 - sin a/2 + 1/4

<u>To find :-</u>

a

<u>Solving :-</u>

sin² a/2 - sin a/2 + 1/4 = (sin a/2 - 1/2)² = 0

sin a/2 - 1/2 = 0

sin a/2 = 1/2

a/2 = 30°

<u>Solution :-</u>

<u>a = 60° or π/3</u>

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