Question
Ravi and Kunal started a business where Ravi invested
Rs. 15,000. Kunal left the partnership after 6 months. At the end of the year, the ratio of profit shares of Ravi and Kunal was 4:3. Find Kunal’s investment.Solution
Let the investment of Kunal be Rs. m. So, (15,000 × 12) : (m × 6) = 4 : 3 Or, 180,000 : 6m = 4 : 3 Or, 180,000 / 6m = 4 / 3 Or, 30,000 : m = 4 : 3 Or, m = 22,500
- Simplify the following trigonometric expression:
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If (cos A - sin A) = √2 cos (90° - A), then find the value of cot A.


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Find the maximum value of 14 sin A + 24 cos A.

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The minimum value of 9 cos2 θ + 36 sec2 θ isÂ