Question

30. Verify cos 3A= 4 cos A-3 cos A when A=30° 232
31. Find the area of the unshaded region.
32. The dimensions of a cuboidal box are 6 m 400 cm * 1.5 m. Find the cost of painting
its entire outer surface at the rate of Rs. 22 per m. ​

Answer 1

Answer:

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Step-by-step explanation:

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