Question

cot 35/tan 55-1/2(sec25/cosec65)+3sin 31 sec 59​

Answer 1

Step-by-step explanation:

= cot35/tan(90-35) - 1/2(sec25 / cosec(90-25) ) + 3sin31/cos(90-31)

= cot35/cot35 - 1/2(sec25/sec25) + 3sin31/sin31

= 1 - 1/2 + 3

= 4-1/2

= 7/2