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please make sure you express it so i can verify and understand it; thank you

Explain what these expressions might be used for: si?: " (0) . cos-1 (2), and ton-1 (8)BIVE S’S. TOThey ink uhid for irwinse equalions and to find the big withatGquestion 2 [1 pointQuestion #2a:Which of the equations below Is the correct set-up that you would use to solve this problem?a.o atan0 bsinton-Question 3 12 points)Questions #2b and #2c:b.) The inverse ratio that would need to be used to solve for angle 8 would be Inverse(inverse sin, Inverse ons,Inverse tank. The measure of 8 Is_". Round do the nearest tenth.c.) The Inverse ratio that would need to be used to solve for angle 8 would be InverseInverse sin, Inverse cos,Inverse tank The measure of B Is". Round do the nearest tenth.Blank 1: sinBlank 2: |6Blank 3: |cosBlank 4Question 4 13 points)Question #2d:Show how to set up an equation to solve for B. State your solution In degrees rounded to the nearest tenth.d.BIVE s’s, Wan