SEC (270 DEGREE-A) SEC (90 DEGREE-A)-(TAN 270 DEGREE-A) TAN (90 DEGREE+A)=?

Asked by Vivek Sehgal | 2nd May, 2012, 03:04: PM

Expert Answer:

sec (270 -A) sec (90 -A)-(tan 270 -A) tan (90 +A)

= -cosec A cosec A + cot A cot A

= -cosec2A + cot2A = -1

Answered by  | 3rd May, 2012, 10:22: AM

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