menu search
brightness_auto
more_vert

If 5(tan2x - cos2x)=2cos2x+9, then the value of cos4x is 

A)-3/5

B)1/3

C)2/9

D)-7/9

 

thumb_up_off_alt 501 like thumb_down_off_alt 0 dislike

1 Answer

more_vert
 
verified
Best answer

See the below image , 

Solution

thumb_up_off_alt 501 like thumb_down_off_alt 0 dislike

Related questions

thumb_up_off_alt 501 like thumb_down_off_alt 0 dislike
1 answer
thumb_up_off_alt 502 like thumb_down_off_alt 0 dislike
1 answer
thumb_up_off_alt 500 like thumb_down_off_alt 0 dislike
1 answer
thumb_up_off_alt 502 like thumb_down_off_alt 0 dislike
1 answer
thumb_up_off_alt 500 like thumb_down_off_alt 0 dislike
1 answer

5.2k questions

4.7k answers

75 comments

393 users

...