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A1:4

B2:1

C1:2

D1:1

Answer:

D. 1:1

Read Explanation:

sin2A+cos2A=1sin^2A+cos^2A=1

sin2A=cos2(90A)sin^2A=cos^2(90-A)

cos2A=sin2(90A)cos^2A=sin^2(90-A)

sin222+sin268cos233+cos257\frac{\sin^2{22}+sin^2{68}}{cos^2{33}+cos^2{57}}

sin222+cos222cos233+sin233\frac{\sin^2{22}+cos^2{22}}{cos^2{33}+sin^2{33}}

1:11:1


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