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26-03-2024
Mathematics

contestada

If cos⁻¹x/a = cos⁻¹y/b =5π/12 and sin⁻¹x/a−sin⁻¹y/b = π/12 then x²/a²+y²/b²=
a. 1
b. ¼
c. ¾
d. 5/4

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