RD Sharma Class 10 if x=a secθ cos⁡ϕ, y=b sec⁡θ sin⁡∅, z=c tan⁡θ prove x^2/a^2 +y^2/b^2 −z^2/c^2 =1

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if x=a secθ cos⁡ϕ, y=b sec⁡θ sin⁡∅, z=c tan⁡θ, then prove that x^2/a^2 +y^2/b^2 −z^2/c^2 =1

[anugyagupta]

So, good in teaching ❤❤
Please also start making videos for 11th