Question 1188581
.


tan(225°) = 1


tan^2(225°) = 1^2 = 1


sin(60°) = {{{sqrt(3)/2}}}


cos(30°) = {{{sqrt(3)/2}}}.



Having these my hints, you do the rest.




The angles 0°, 30°, 45°, 60°, 90°, 120°, 135°, 150°, 180°, 210°, 225°, 240°, 270°, 300°, 315°, 330°, 360°


are special angles, and EVERY student studying Trigonometry MUST know the values of all trigonometry functions at these angles


precisely in the same way as more young students know the multiplication table.



If you do not know it,  it means that  YOU  ARE  in  WRONG  CLASS.



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You can find these tables in the  Internet,  see the links



https://www.mathwords.com/t/trig_values_of_special_angles.htm


https://mathvox.com/table-of-the-trig-functions-of-special-angles/


https://www.livingston.org/cms/lib9/NJ01000562/Centricity/Domain/742/calc/Trig%20functions%20chart%20-%20answers.pdf



especially the last link.