alleryIf sin(theta) + cos(theta) = sqrt(2) and theta is acute, then theta is
A30 degrees
B45 degrees
C60 degrees
D90 degrees
Answer & Solution
Correct answer: B. 45 degrees
Square: 1 + 2 sin cos = 2, sin(2 theta) = 1, 2 theta = 90, theta = 45 degrees.
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