Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.
Start Practicing

Worksheet: Double-Angle and Half-Angle Identities

Q1:

Simplify .

  • A
  • B
  • C
  • D

Q2:

Simplify .

  • A
  • B
  • C
  • D

Q3:

Find the value of .

Q4:

Simplify .

  • A
  • B
  • C
  • D

Q5:

Find the value of without using a calculator.

  • A
  • B
  • C
  • D

Q6:

Find the value of .

Q7:

Find the value of given without using a calculator.

  • A
  • B
  • C
  • D

Q8:

Knowing that , find and .

  • A
  • B
  • C
  • D
  • E

Q9:

Knowing that , find and .

  • A
  • B
  • C
  • D
  • E

Q10:

Find the value of .

  • A
  • B
  • C
  • D

Q11:

Find the value of given where without using a calculator.

  • A
  • B
  • C
  • D

Q12:

Find, without using a calculator, the value of given where .

  • A
  • B
  • C
  • D

Q13:

Find, without using a calculator, the value of given where .

  • A
  • B
  • C
  • D
  • E

Q14:

Find, without using a calculator, the value of given where .

  • A
  • B
  • C
  • D

Q15:

Find the value of given where without using a calculator.

  • A
  • B
  • C
  • D

Q16:

Find, without using a calculator, the value of given where .

  • A
  • B
  • C
  • D