Question

sin 60°-
3 tan 30° + 5 cos 90°
cos 45º​

Answer 1

Step-by-step explanation:

  sin 60°-  3 tan 30° + 5 cos 90° cos 45º​

= $\sqrt{3\\}$/2 - ( 3 x 1/$\sqrt{3}$) + (5 x 0 x 1/$\sqrt{2\\}$)

= $\sqrt{3\\}$/2 - $\sqrt{3\\}$

= ($\sqrt{3\\}$ - 2$\sqrt{3\\}$ ) /2

= - $\sqrt{3\\}$/2       ( Ans)

HOPE THIS IS HELPFUL !!! : )

Answer 2

Answer:

-√3/2

Step-by-step explanation:

√3/2 - 3 ( 1/√3) + 5 (0) 1/√2

=√3/2 - 3/√3 + 0 X 1/√2

= √3/2 - √3 X 1/√2

= √3/2 - √3/√2

= √3- 2√3/ 2√2                                      ( by taking LCM )

-√3/2

HOPE IT HELPED YOU...