Question

2sin60°*sin90°+cos60°*cos0°

Answer 1

Answer:

$= \frac{ \sqrt{3} + 1 }{2}$

or 1.366

Step-by-step explanation:

• sin60° = √3/2

• sin90° = 1

• cos60° = 1/2

• cos0° = 1

$(2sin60° \times sin90°)+(cos60° \times cos0°) \\ = (\frac{ \sqrt{3} }{2} \times 1) + ( \frac{1}{2} \times 1) \\ = \frac{ \sqrt{3} }{2} + \frac{1}{2} \\ = \frac{ \sqrt{3} + 1 }{2}$

If, √3 = 1.732

$\frac{ \sqrt{3} + 1 }{2} \\ = \frac{1.732 + 1}{2} \\ = \: \frac{2.732}{2} \\ = 1.366$