182k views
4 votes
NEED HELP ASAP PLEASE​

NEED HELP ASAP PLEASE​-example-1
User Calumah
by
8.7k points

1 Answer

4 votes

Answer:

cosθ = 0.87

Explanation:

Identity given,

sin²θ + cos²θ = 1

Values of sinθ = 0.5

Since, angle θ is in the first quadrant, all values of cosθ and sinθ will be positive.

Therefore, cos²θ = 1 - sin²θ

cos²θ = 1 - (0.5)²

cos²θ = 1 - 0.25

cosθ = √(0.75)

= 0.86603

0.87

Therefore, value of cosθ will be 0.87

User Web Worm
by
7.5k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories