Question

prove that ,
(1+sec20°+cot70°) (1-cosec20°+tan70°)=2​

Answer 1

Answer:

(1- cosec20 + tan70 +sec20- sec20 cosec20+sec20 tan70 + cot70 -cot70 cosec20 + cot70 tan70)

1 - 1/sin20 + sin70/cos70 + 1/cos20 - (1/cos20 * 1/sin20) + (1/cos20 * sin70/cos70) + cot70 - ( cos70/sin 70 * 1/sin 20) + (cps70