Q59Multiple choice
If for real values of x, cos θ = x + , then
- (A)θ is an acute angle
- (B)θ is right angle
- (C)θ is an obtuse angle
- (D)No value of θ is possible Fill in the blanks in Exercises 60 to 67 : sin 50°
If for real values of x, cos θ = x + , then