Question

3 cos 60°-cos 60° find exact value​

Answer 1

Answer:

1

Step-by-step explanation:

$\\ \sf\hookrightarrow 3cos60-cos60$

$\\ \sf\hookrightarrow 2cos60$

• put the value of cos60

$\\ \sf\hookrightarrow 2\times \dfrac{1}{2}$

$\\ \sf\hookrightarrow \dfrac{2}{2}$

$\\ \sf\hookrightarrow 1$

Answer 2

Answer:

1

Step-by-step explanation:

3cos 60 - cos 60. ( since : cos 60 = 1/2 or 0.5)

= 3 ( 1/2) - (1/2)

= 3/2 - 1/2

= 2/2

= 1