Question

sin^2(2π/3) + cos^2 (5π/6) -tan^2 (3π/4)​

Answer 1

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Answer 2

Answer:

1/2

Step-by-step explanation:

2Π/3=120

5Π/6=150

3Π/4=135

sin^2(180-60)+cos^2(180-30)-tan^2(180-45)

sin^2(60)+cos^2(30)-tan^2(45)

(√3/2)^2+(√3/2)^2-(1)^2

(3/4)+(3/4)-1

(6/4)-1

(3/2)-1

(1/2)