find the value of (sin90° + Cos 60° + cos 45°)× (sin 30° - Cos 0° + cos 45°)
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Answer:2root2-1/4
Step-by-step explanation:
(1+1/2+1/root2)×1/2-1+1/root2)
=[(3+root2)/2]×[(-1+root2)/2]=(-3+3root2-root2+2)/4=(-1+2root2)/4
=(2root2-1)/4
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