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In a triangle ABC if A,B,C ar in A.P with sin(2A+B)=sin(C-A)=sin(B+2C)=1/2 then what are the values of A,B and C?
Express the complex number in trigonometric form with cis (-5/2) + (5/2)*sqrt(3)*i
Express this complex number in trigonometric form (5/2)*sqrt(3) + (5/2)*i
write the expression as the sine of a double angle and find the exact value
2sin15 degree cos 15 degree
use the half angle formula to find the exact value of sin15 degree
determine the exact value for sin 5x/8 (use a half-angle formula)
find the exact value of cos(165)
Dani and Naya were standing one mile apart on linden Boulevard. They observed an American Airlines aircraft between them directly above the road. The angle of elevation from Dani was 48 degrees and from Naya was 70 degrees. Draw a diagram to illustrate this situation and find the height of the aircraft, to the nearest hundredth of a foot. write an explanation of what you are asked to do to solve the problem. write all the information needed to solve the problem. list the steps you need to do to solve the problem, than write a complete solution.
2sinx/sin3x + tanx/tan3x =1 . prove this
sin3x + cos2x =-2
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