Question

If tanA + sinA =m and tanA -sinA = n, show that m2-n2 = √

Answer 1

Answer:

Step-by-step explanation:

tanA + sinA =m

tanA -sinA = n

m2-n2

=$(tanA+sinA)^{2}-(tanA-sinA)^{2}$

=(tanA+sinA+tanA-sinA)(tanA+sinA-tanA+sinA)

=2tanA*2sinA

=4sinAtanA

=4mn

HENCE PROVED.

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