State whether the following are true or false. Justify your answer.The

1.	State whether the following are true or false. Justify your answer.The value of cos θ increases as θ increases.
Answer» cos 0° = 1 cos 30° = \(\frac{\sqrt3}{2}\) = 0.87 cos 45° = \(\frac{1}{\sqrt 2}\)= 0.7 cos 60° = \(\frac{1}{2}\)= 0.5 cos 90° = 1 ∴ The value of cos 0 increases as 0 increases – the statement is False.

State whether the following are true or false. Justify your answer.The value of cos θ increases as θ increases.

Answer»

cos 0° = 1 cos 30° = \(\frac{\sqrt3}{2}\) = 0.87

cos 45° = \(\frac{1}{\sqrt 2}\)= 0.7 cos 60° = \(\frac{1}{2}\)= 0.5

cos 90° = 1

∴ The value of cos 0 increases as 0 increases – the statement is False.