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    SN2's Avatar
    SN2 Posts: 2, Reputation: 1
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    #1

    May 19, 2017, 09:36 PM
    Trigonometric Identities
    1. Determine the non-permissible values of the identity (1/sinx)(1/cosx)=tan x + (1/tan x)

    2. The equation (tan^2 θ)/(1+tan^2 θ) =sin^2 θ is true when θ=30 and when θ=135. Does this mean that the equation is an identity? Why or why not.
    ma0641's Avatar
    ma0641 Posts: 15,681, Reputation: 1012
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    #2

    May 20, 2017, 06:58 AM
    Did you read about posting homework? This pertains to your first question too.

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