The value of (sin221° + sin269°) - CUETMOCK

Practicing Success

Start Free Mocks

Follow :

CUETMOCK

Ace Your

CUET Preparation Today

Start Free Mocks

Home Questions EA7QHRKZGY

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Trigonometry

Question:

The value of (sin²21° + sin²69°) is:

Options:

-1

2

0

1

Correct Answer:

1

Explanation:

sin²21° + sin²69°

= sin²21° + cos²21° (sinθ = cos(90-θ))

= 1 (sin²θ + cos²θ = 1)

CUET Questions