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22 August, 06:07

Angle theta lies in the second quadrant, and sin theta = 3/5. What is cos theta and tan theta?

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  1. 22 August, 06:28
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    Hello,

    1)

    sin x=3/5==>x=126.869897 ... ° (since in quadrant II)

    2) = = >cos x<0

    cos x=-√ (1-sin ² x) = - √ (1-9/25) = - 4/5

    tan x = (3/5) / (-4/5) = - 3/4

    cotg x=-4/3 = 1/tan x

    sec x=1/cos x=-5/4

    cosec x=1/sin x=5/3
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