Question
If sin 2a = (3/2), then find the value of (sin a + cos
a).Solution
sin 2a = (3/2)
Adding 1 to both sides, we get;
1 + sin 2a = (5/2)
We know that (sinĀ²a + cosĀ²a) = 1 and (sin 2P = 2 sinP cosP)
sinĀ²a + cosĀ²a + 2 sin a cos a = (5/2)
(sin a + cos a)Ā² = (5/2)
(sin a + cos a) = ā10/2
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