Asked by Srishti
Tan(-1440)+cot(810)+sin(-11Π/3)-cos(1110)
Answers
Answered by
oobleck
what, you don't have a calculator?
On the other hand, reducing these large angles to QI values, we have
tan(-1440°) = tan(-4*360+0) = tan0°
cot(810°) = cot(720+90) = cot(90°)
sin(-11π/3) = sin(-4π + π/3) = sin(π/3)
cos(1110°) = cos(3*360+30) = cos(30°)
Now just use those familiar angles.What do you get?
On the other hand, reducing these large angles to QI values, we have
tan(-1440°) = tan(-4*360+0) = tan0°
cot(810°) = cot(720+90) = cot(90°)
sin(-11π/3) = sin(-4π + π/3) = sin(π/3)
cos(1110°) = cos(3*360+30) = cos(30°)
Now just use those familiar angles.What do you get?
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