if sin (20+theta) = cos30° , then find theta
shantanupathak:
sin (20+40)=cos30
theta=40
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Answers
Answered by
4
sin (20+theta) = cos30
sin (20+theta) = sin(90-30)
20 + theta = 60
theta = 60-20
theta = 40
sin (20+theta) = sin(90-30)
20 + theta = 60
theta = 60-20
theta = 40
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Answered by
0
sin(20+theta)=sin(90-30)
sin(20+theta)=sin(60)
20+theta = n(180) + ((-1)^n)60
theta = n(180) + ((-1)^n)60 - 20
sin(20+theta)=sin(60)
20+theta = n(180) + ((-1)^n)60
theta = n(180) + ((-1)^n)60 - 20
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