Question

2 tan^2 (45) +3 cos^2(30) - sin^2(60)

Answer 1

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Answer 2

Answer:

7/2

Step-by-step explanation:

tan 45° = 1

cos 30° = √3/2

sin 60° = √3/2

Putting these values, we get,

$2(1)^2 + 3(\frac{\sqrt{3} }{2})^2 - (\frac{\sqrt{3} }{2})^2\\2 + \frac{9}{4} - \frac{3}{4}\\2 + \frac{6}{4} \\\frac{14}{4}\\ \frac{7}{2}$