Question

Find the value of 2 tan²45 Sin²60- Cos² 30.​

Answer 1

Answer:

2 x 1^2 x (√3/2)^2 - (√3/2)^2

2 x (3/4) -(3/4)

3/4

hope this helps

Answer 2

Answer:

$\frac{3}{4}$

Step-by-step explanation:

$2 \: { \tan^{2} (45°)} \times \sin^{2} (60°) - \cos^{2} (30°) \\ = 2 \times {1}^{2} \times ({ \frac{ \sqrt{3} }{2} })^{2} - ({ \frac{ \sqrt{3} }{2} })^{2} \\ = 2 \times 1 \times \frac{3}{4} - \frac{3}{4} \\ = \frac{3}{2} - \frac{3}{4} = \frac{6 - 3}{4} = \frac{3}{4}$