What is \;{p²-q²}{p²+q²} equal to?

Correct Answer is : cos⁡( π2−A−B)≤ft(\;π/2 - A - B)cos(2π−A−B)

Correct Answer is : cos⁡( π2−A−B)≤ft(\;π/2 - A - B)cos(2π−A−B)

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UPSC NDA II 2025 Mathematics Paper

Question Numbers: 25-26

For the following two (02) items:

Let sin A + sin B = p and cos A + cos B = q

Question : 26 of 120

Marks: +1, -0

What is

\;\frac{p^{2}-q^{2}}{p^{2}+q^{2}}

equal to?

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