Question

Evaluate 2cot^2 60°+ 3sin^2 30°+2cos^2 90°

Answer 1

Answer:

17 / 12

Step-by-step explanation:

= 2 * 1 / 3 + 3 * 1 / 4 + 2 * 0

= 17 / 12

Answer 2

Answer:

[(\frac{1}{2})^{2}+4(1)^{2}-(2)^{2}][(\sqrt{2})^{2}\times (\frac{2}{\sqrt{3}})^{2}]

= [\frac{1}{4}+4-4][2\times \frac{4}{3} ]

= (\frac{1}{4})(\frac{8}{3})

= \frac{2}{3}