SOLUTION: find the trig. ratio of the following cot 180(degrees) csc -270(degrees) sec 720(degrees)
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Question 28415
:
find the trig. ratio of the following
cot 180(degrees)
csc -270(degrees)
sec 720(degrees)
Answer by
venugopalramana(3286)
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cot 180(degrees)=COT(180-0)=-COT(0)=-1/TAN(0)=-1/0=-INFINITY
csc -270(degrees)=COSEC(180+90)=-COSEC(90)=-1/SIN(90)=-1
sec 720(degrees)=SEC(360*2+0)=SEC(0)=1/COS(0)=1/1=1