2 sin^2 30° - 2 cos^2 45° + tan^2 60° =?
Answers
Answered by
0
Answer:
2.5
Step-by-step explanation:
=2 sin^2 30° - 2 cos^2 45° + tan^2 60°
=2×1/4-2×1/2+3
=2.5
Answered by
1
Step-by-step explanation:
= 2sin²30°-2cos²45°+tan²60
= 2×(1/2)²-2×(1/√2)²+(√3)²
= 2×1/4 - 2×1/2 +3
= 1/2 - 1 + 3
=1/2+2
=. 5/2
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