SOLUTION: Given Tan x= 2/5 with π < x < 3π/2
find sin x/2 cos x/2 tan x/2
sin 2x cos 2x and tan 2x
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Question 860242: Given Tan x= 2/5 with π < x < 3π/2
find sin x/2 cos x/2 tan x/2
sin 2x cos 2x and tan 2x
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Given Tan x= 2/5 with π < x < 3π/2
find sin x/2 cos x/2 tan x/2
sin 2x cos 2x and tan 2x
***
Reference right triangle is in quadrant III in which sin<0, cos<0, tan>0
Hypotenuse=√(2^2+5^2)=√(4+25)=√29
sin(x)=-2/√29
cos(x)=-5/√29
...
Note: Let me know if my solution(s) are correct, helpful and understandable.
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