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Trig

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Establish the identity:

1. sin0(cot0 + tan0) = sec0

2. cos0 +1/cos0 -1 = 1 + sec0/1 - sec0

  • Trig - ,

    1. sin x (cot x + tan x) =
    sin x (cos x/sin x + sin x/cos x) =
    cos x + (sin^2/cos x) =
    [cos^2 x + sin^2 x]/cos x =
    1/cos x
    = sec x

    You try the other one

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