2015年10月3日 · sin30^0 = 1/2, cos 30^0 = (sqrt 3) /2 and tan 30^0 = 1 / sqrt 3 Now csc 30^0= 2,sec 30^0 = 2/sqrt 3 and cot 30^0 = sqrt3

2015年5月15日 · cot 30 = 1/tan 30 Trig conversion table gives: tan 30 = (sqr3)/3, then cot 30 = 3/(sqr3) = (3sqr3)/3 = sqr3

How do you find the exact values of cot, csc and sec for 30 degrees? How do you find the exact values of ...

2018年6月10日 · amplitude: 1 period: 2pi vertical phase shift: 0 horizontal phase shift: right 30 degrees or pi/6 in radians cot is not being multiplied by anything therefore amplitude is 1. period of tangent and cotangent with no stretch is always 2pi. nothing is being added outside of the inner function so there is no vertical shift, but there is subtraction inside the inner function shifting it …

2018年6月3日 · #"using the "color(blue)"trigonometric identity"# #•color(white)(x)cottheta=1/tantheta# #tan240=tan(240-180)=tan60=sqrt3#

2015年5月7日 · Trig unit circle gives: #sin (330) = sin (360 - 30) = -sin 30 = -1/2# (trig table) #cos (330) = cos (360 - 30) = cos 30 = (sqr3)/2# (trig table)

2016年5月24日 · Assuming the units here are degrees: #tan(-150) = tan(30) = 1/sqrt(3)# #cot(x) = 1/tan(x)# Hence: #cot(-150) = sqrt(3)#

2016年7月2日 · -sqrt 3 690=720-30=4(180)-30.So, 690° is in the 4th quadrant and, therefore, cot is negative. And so, cot 690°=cot(4(180°)-30°)=-cot 30°=-sqrt 3.

390° = 360°+30° = 30° The ratios of 390 are the same as the ratios of 30°. sin 390 = sin (30 + 360) = sin 30 = 1/2 cos 390 = cos (30 + 360) = cos 30 = sqrt3/2 tan 390 = tan 30 = 1/sqrt3 = sqrt3/3 cot 390 = 1/(tan 30) = sqrt3/1 sec 390 = 1/cos 30 = 2/sqrt3 csc 390 = 1/(sin 30) = 2/1

2015年5月30日 · cot 60˚ = 1/(tan 60˚) Trig conversion table gives --> tan 60˚ = sqrt3 cot 60˚ = 1/(sqrt3) = (sqrt3)/3