Question

5+5 cos60°

help answer should be √3 / 2

I want steps ​

Answer 1

Answer:

Answer can't be √3 / 2.

Step-by-step explanation:

5+5 cos60° = 5+5×1/2

= 15/2

If you want √3 / 2 in answer, do following steps-

15/2 = 15/2 × √3/√3

= 15/√3 × √3/2

For more simplification, multiply 15/√3 by √3/√3.

= √3/2 × 15×√3/3

= √3/2 × 5√3.