Question

If x=a sin theta and y=b tan theta prove that a²/x²-b²/y²=1​

Answer 1

Step-by-step explanation:

x=asin©

=)(a/x)²=cosec²©

similarly

=)(b/y)²=cot²©

lhs:

(a/x)²-(b/y)²=cosec²©-cot²©=1

(using identity)

hence proved .........