Evaluate 5cos^2 60degree + 4 cos^2 30degree - tan^2 45degree / sin^2 30degree + cos^2 60degree
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Answered by
3
Answer:
The answer is 13/2
Step-by-step explanation:
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Umachandru238:
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in the above answer s the "question" copied correct?
Answered by
1
Answer:
1/2
Step-by-step explanation:
5 cos²60° + 4 cos²30° - (tan²45°/sin²30°) + cos²60°
= 5(1/2)² + 4 (√3/2)² - 1²/(1/2)² + (1/2)²
= 5(1/4) + 4(3/4) - 1/(1/4) + 1/4
= (5/4) + 3 - 4 + (1/4)
= (5/4) - 1 + (1/4)
= (6/4) - 1 (LCM)
= (6-4)/4
= 2/4
= 1/2
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