Question

WITHOUT USING TRIGONOMETRIC TABLE,PROVE- sin 5 tan 22 sec 60 tan 68 sec 85 = 2

Answer 1

sin5=sin(90-85)=cos85.tan22=tan(90-68)=cot68.therefore                                          sin5 tan22 sec60 tan68 sec85=cos85 cot68 (2) tan 68 sec 85=2

Answer 2

Answer:

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Hi!!!!!!

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