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RD Chapter 13 Derivative as a Rate Measurer Ex 13.2 Solutions

Question - 11 : - A man 180 cm tall walks at a rate of 2 m/sec. away, from a source of light that is 9 m above the ground. How fast is the length of his shadow increasing when he is 3 m away from the base of light?

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Question - 16 : - 1.

2.

Find the angle θ Whose rate of increase is twice the rate of decrease of its consine.

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