Question

7/2(cos70/sin 20)+3/2(cos 55*cosec 35/tan 5*tan 25*tan 45*tan 85*tan65

Answer 1

Answer:

Step-by-step explanation:

7/2 ( cos 70/ cos 70 ) + 3/2 ( cos 55 x sec 55/ tan 5 tan 25 x 1 x cot 5 x cot 25 )

( By supplementary angles )

Everything will get cancelled and,

7/2 + 3/2

= 5