evaluate 2 sin square 30 - 3 cos square 30 + tan 60 + 3 sin square 90
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Answer:
Step-by-step explanation:
Sin30° = 1/2
Cos30° = Sin60° = √3/2
Tan60° = √3
Sin90° = 1
2Sin²30° - 3 Cos²30° + Tan60° + 3Sin²90°
=> 2(1/2)² - 3(√3/2) + √3 + 3(1)²
=>2*1/4 - 3*3/4 + √3 + 3
=> 3 + 1/2 - 9/4 + √3
=> (14 - 9)/4 + √3
= [5 + 4√3] / 4.
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