OPT MATHS CLASS 10

What is the formula of Sin2A?

• 2*SinA*CosA

• Cos^2A-Sin^2A

• 2Cos^2A-1

• 1-2Sin^2A

WHAT is the value of sin30?

• 1

• 1/2

• 2

• 3

 $What\ is\ the\ value\ of\ Tan60?$  

•  $\sqrt{3}$  

•  $\sqrt{3}\div2$ 

• 1/2

• 3

What is the formula of Cos2A?

• 2*SinA*CosA

• Sin2A

• 2Cos^2A-1

• 2CosA-1

 $What\ is\ the\ value\ of\ \theta\ if\ Sin\theta=1$  

• 0

• 90

• 45

• 30

IF f(x)=4x+5,What is the value of ff(2)?

• 57

• 13

• 8

• 9

If f(x)=2x+5 and g(x)=3x,What is the value of gof(x)?

• 2x+5

• 6x+5

• 6x

• 6x+15

If f(x)=4x+5,What is the value of f^-1(x)?

• x-5/4

• 4x-5

• 4x

• 5-4x

If f^-1(x)=3x,What is the value of f(x)?

• 3/x

• x/3

• 3-x

• 3+x

What is the value of x if Tanx=1

• 45

• 60

• 30

• 90