Math, asked by veer20, 1 year ago

if cos 3x=0 find the value of sins , cos2x

Answers

Answered by sayanta1
0
this is right answer
Attachments:
veer20: cos0. =1
veer20: hw to solve 0
veer20: its ans is 1/2
sayanta1: ohh sorry
Answered by rohitkumargupta
3
i hope you understand very well
cos 3x=0=cos3×30
hence x=30°
sinx=sin30°=1/2
cos2×30=1/2=cos2x
Attachments:
veer20: nw hapy
veer20: smile nw
rohitkumargupta: ok
veer20: can u solve one more
veer20: sec^2(90-x)-1/cot^2(90-x)=1
rohitkumargupta: ya
rohitkumargupta: we know sec90-x=cosecx
rohitkumargupta: plz ask your question on timeline
rohitkumargupta: i need to send a pic
rohitkumargupta: for your question
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