CBSE Class 12-science Answered
If cos-1 x+cos-1y+cos-1 z=pi,P.T. x2+y2+z2+2xyz=1.
What is the difference between finding value of sin-1(sin3pi/5) & finding principal value of inverse trig. fn?
Since,a finding principal value of means we
are finding value within the principal range.But in our textbooks,Principal value of cos-1(-1/2)=2pi/3which does not belong to prin. range
Asked by Sruti S | 24 Jan, 2012, 09:44: AM
Expert Answer
Note: You can ask only one question in one quarry.
Answered by | 25 Jan, 2012, 05:09: PM
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