5. Evaluate : 5 cos2 60 + 4 cos2 30 - tan2 45/
sin2 30 + cos 2 60
Share
5. Evaluate : 5 cos2 60 + 4 cos2 30 - tan2 45/
sin2 30 + cos 2 60
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Step-by-step explanation:
please mark me bainlist
hope it helps you
Answer:
5 cos² 60° + 4 cos² 30° - tan² 45°/ sin² 30° + cos² 60°
5 × (1/2)² + 4 × (√3/2)² - (1)² / (1/2)² + (1/2)²
5/4 + 4 × 3/4 - 1 / 1/4 + 1/4
5/4 + 3 - 1 / 1/2
17/4 - 1 / 1/2
13/4 / 1/2
13/4 × 2/1
=13/2.