Introduction to Trigonometry

 $2\sin^245\degree$  =......

• 1

•  $\frac{1}{2}$  

•  $\frac{1}{\sqrt{2}}$  

• None of the above

Tags

CCSS.HSF.TF.C.8

Is tanA the reciprocal of cotA

• NO

• YES

Tags

CCSS.HSG.SRT.C.7

 The value of $\cos90\degree$ is 1

• TRUE

• FALSE

Tags

CCSS.HSF.TF.A.2

 $\cot\ \left(90\degree-A\right)=$  

• sec A

• sin A

• tan A

• cos A

Tags

CCSS.HSG.SRT.C.7

If $\Delta ABC$  is right angled at C, then find the value of cos (A+B)

• 0

• 1

•  $\frac{1}{2}$  

•  $\frac{\sqrt{3}}{2}$  

Tags

CCSS.HSG.SRT.C.7

In a right angled triangle the side opposite to right angle is called

• Base

• Perpendicular

• Hypotenuse

• None of the above

 $\sin^229\degree+\sin^261\degree=$  

• 1

• 0

•  $2\sin^229\degree$  

•  $2\cos^261\degree$  

Tags

CCSS.HSF.TF.C.9

 $\sin\theta=\frac{4}{3}\$  for some angle of  $\theta$  . State true or false

• TRUE

• FALSE

Tags

CCSS.HSF.TF.B.7

 $\sec^260\degree-1=$  

• 2

• 3

• 4

• 0

Tags

CCSS.HSF.TF.C.8

Write the maximum value of $\sin\theta$  

• 1

• -1

• 0

• 2

Tags

CCSS.HSF.TF.A.4