Trigonometry

Which of the following formula is not Correct ?

• tanA×CotA=1

• tanA= SinA/CosA

• CotA =1/tanA

• CotA= SinA/CosA

Which of the following trigonometric ratio is not correct ?

• SecA= Hypotenuse/Base

• CotA= Perpendicular/Base

• SinA= perpendicular/Hypotenuse

• CosecA= Hypotenuse/perpendicular

If SecB= 1 then B= ?

• 0°

• 60°

• 30°

• 45°

If CosecA =2/√3 than A = ?

• 30°

• 60°

• 45°

• 90°

What is the value of Sec30°Cos30°+Sin45°Cosec45°-cot30°

(a)  

Sin30°- Cos60°+ tan60° is ?

• 0

• 1/√3

• 1

• √3

Value of Sec90° is ?

• 1

• 0

• 2

• Not defined

Value of Cosec30°- Cos60° is ?

• 1/2

• 3/2

• Not defined

• 2

Value of Cosec90° is ?

• 0

• 1

• Not defined

• 2

In the following figure , the value of CotA is ?

• 12/13

• 5/12

• 5/13

• 13/5