Questions asked by IZUkuABA

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• #vecP+vecQ+vecR=0# and #|vecP|=3, |vecQ|=4, |vecR|=5# then angle between #vecP# and #vecR# is?
  
• If #hata_1,hata_2andhata_3 #are unit vectors and#2hata_1+2hata_2+hata_3=0# then angle between #hata_1 and hata_2 # is?
  
• The resultant of two vectors#vecP# and #vecQ# is #vecR#. if the magnitude of#vecQ# is doubled , the new resultant becomes perpendicular to #vecP#. then magnitude of #vecR# is?
  
• If #hata_1+hata_2+hata_3=0# then the value of #|hata_1-hata_2|^2+|hata_2-hata_3|^2+|hata_3-hata_1|^2# is?
  
• A vector of magnitude 4 unit rotates through an angle of #60degree#.Then magnitude of its change is?
  
• The velocity of particle moving along a straight line increases according to the law#v=v_0+Kx# , where K is a positive constant,then options are below?
  
• The max value of 4sin^2x+3cos^2x is Options are 4,3,7and 5?
  
• The max value of #5cosα+3cos(α+π/3)+3 # is?
  
• If in triangle ABC #sin^(2)A+sin^(2)B+sin^(2)C=2# then the triangle is options are below?
  
• If #0<(alpha),(beta),(gamma)<(pi)/2# prove that #sin(alpha)+sin(beta)+sin(gamma)>sin(alpha+beta+gamma)#?
  
• #sin^2A+sin^2(A-B)+2sinAcosBsin(B-A)=# ?
  
• IN any triangle ABC,#sinA-cosB=cosC# then angle B is?
  
• The value of #sin20.sin40.sin60.sin80# is?