3. If A and B are acute angles and sin A = cos B then the value of (A + B) is (1) 0 degrees; 90 degrees , a. b. c.30^; 60 degrees d.
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woman starts from her house at 9.00 am, walks with a speed of 5 km/hr on a straight road upto ner office 5 km away, stays at the office up to 5.00 pm, and returns home by an auto at a speed of 30 km/hr. Choose suitable scales and plot the x-t graph of her motion.
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