Miscellaneous Company Exam
Company
Numerical Ability
Area and Volume
sinx+2sinx=1 then cos2x+cos4x=?
Read Solution (Total 2)
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- If u mean
Sin2x as (sinx)^2, then
sinx+sin2x=1 or sinx+(sinx)^2=1
sinx=1-sin2x
sinx=cos2x(squaring both the sides)
sin2x=cos4x
1-cos2x=cos4x
1=cos4x+cos2x
- 10 years agoHelpfull: Yes(1) No(0)
- 8/9 * (2-(2)^1/2)
- 10 years agoHelpfull: Yes(0) No(1)
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