Question

8. sin 30° cos? 45° + 4 tan? 30° +-sin? 90° - 2 cos? 90° + cos? 0°
2
24​

Answer 1

4+ √2

Step-by-step explanation:

sin 30° cos 45° + 4 tan30° +-sin90° - 2 cos90° + cos0°

$\frac{1}{2} \times \frac{1}{ \sqrt{2} } + 4(1) + ( - 1) - 2(0) + 1$

$\frac{2}{ \sqrt{2} } \times \frac{ \sqrt{2} }{ \sqrt{2} } + 4$

$\frac{2 \sqrt{2} }{2} + 4$

4+ √2