tan(39c) = 3.6146
If the angle was not measured in radians (the mathematical standard), you should have mentioned the units used.
To find the value of (\tan(15^\circ) \tan(195^\circ)), we can use the identity (\tan(195^\circ) = \tan(15^\circ + 180^\circ) = \tan(15^\circ)). Thus, (\tan(195^\circ) = \tan(15^\circ)). Consequently, (\tan(15^\circ) \tan(195^\circ) = \tan(15^\circ) \tan(15^\circ) = \tan^2(15^\circ)). The exact value of (\tan^2(15^\circ)) can be computed, but it is important to note that it will yield a positive value.
= tan (48.323 deg) = 1.1232
tan 2 pi = tan 360º = 0
tan (30 degrees) would be equal to 0.577350269.
39
The value of tan A is not clear from the question.However, sin A = sqrt[tan^2 A /(tan^2 A + 1)]
12
tan(135) = -tan(180-135) = -tan(45) = -1
tan(22.5)=0.414213562
= tan (48.323 deg) = 1.1232
Tan 42 degrees = 0.9004
Tan(74 degrees) = 3.487414444.....
tan(61°) = 1.80405 (rounded)
tan 2 pi = tan 360º = 0
tan(-x) = -tan(x)
tan(135 degrees) = negative 1.
tan (30 degrees) would be equal to 0.577350269.