Question

value of 4 ( tan 13° tan 37° tan 45° cot 37° cot 13°)

Answer 1

Step-by-step explanation:

4(tan13 tan37 tan 45 cot 37 cot 13)

[cot A=1/tanA]

4(tan13 tan37

tan 45 1/tan37 1 /tan 13

4(1×1×tan 45)

[tan45=1]

4(1×1)

4