Question

Evaluate
Sin square 15 + sin square 75 - tan square 30

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Answer 1

Answer:

2/3

Step-by-step explanation:

sin^2 15 + sin^2 75- tan^2 30

sin^2(90-75) + sin^2 75- (1/√3)^2

cos^2 75 + sin^2 75 - 1/3

1-1/3

3-1/3 = 2/3

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