Question

sin^2135+cos^2120-sin^2120+tan^2150​

Answer 1

Answer:

sorry I don't know about this answer but

Answer 2

Answer: -1/3

Step-by-step explanation:sin^2135 = sin^2{90+45} = cos^245 = {1/$\sqrt{2}$}^2 = 1/2

cos^2120 = cos^2{90+30} = sin^230 = {1/2}^2 = 1/4

sin^2120 = sin^2{90+30} = cos^230 = {$\sqrt{3}$/2}^2 = 3/4

tan^2150 = tan^2{90+60} = cot^260 = {1/$\sqrt{3}$}^2 = 1/3

= 1/2 + 1/4 - 3/4 + 1/3

= 3/4 - 13/12

= 9 - 13/12

= -4/12 = -1/3

I Hope this solution helps you