Question

6cot²45°-sec²60°+sin²60°-cos²30°
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Answer 1

Answer:

hope it helps .....

Answer 2

6cot^2(45)-sec^2(60)+sin^2(60)-cos^2(30)

= 6(1)^2 - (2)^2 + (√3/2)^2 - (√3/2)^2

= 6(1) - 4 + 3/4 - 3/4

= 6 - 4 + 0

= 2

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Trigonometric Ratios used:

• cot(45) = 1
• sec(60) = 2
• sin(60) = √3/2
• cos(30) = √3/2