QuickHelper

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Category > Math Posted 22 Aug 2017 My Price 15.00

math urgent

Jana is proving that the following trigonometric identity is true:

cos(−θ)⋅tanθ=sinθ


Which step would be the first line of her proof?

 

sin(−θ)=−1/4 and tanθ=15√15

What is the value of cosθ ?

 

 

The angle θ lies in Quadrant II .

sinθ=3/4

What is cosθ ?

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QuickHelper
(10)
Status NEW Posted 22 Aug 2017 08:08 PM My Price 15.00

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