If \sin\alpha + \sin\beta = \frac{\sqrt{2}}{\sqrt{3}} and \c... — Quantitative Ability 2022

Question 221 Quantitative Ability 2022 Medium NAT +4.00 marks

If \(\sin\alpha + \sin\beta = \frac{\sqrt{2}}{\sqrt{3}}\) and \(\cos\alpha + \cos\beta = \frac{1}{\sqrt{3}}\), then the value of \(\left(20\cos\left(\frac{\alpha-\beta}{2}\right)\right)^2\) is.

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