Question

Find the value of sin²35° + sin²55°

• A. -1
• B. 1/2
• C. 0
• D. 1

Answer 1

Answer:

D. 1

Solution:

Formula used:

sin²θ + cos²θ = 1

sinθ = cos(90° – θ)

Calculation:

Our given equation is 

sin²35° + sin²55° 

⇒ sin²35° + Sin²(90° – 35°)

⇒ sin²35° + cos²35°

⇒ 1

∴ The value of given expression is 1