if tanA+ secA =x
then prove that
sinA= x2-1/x2+1
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Step-by-step explanation:
This seems like a nice bit of algebra.
secA + tanA = x
From now on I will just let s = sinA
Treating this as a quadratic with variable s and x is a constant we get:
Solving using the quadratic formula:
If sinA = – 1 then A = 270 degrees so since sec270 and tan270 are infinite the only answer seems to be:
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