Question

cot²30⁰-2cos²60⁰-¾sec²45⁰-4cosec²30⁰​

Answer 1

Answer:

(√3)² - 2×( ½)²-¾(√2)²-4×(2)²

= 3 - 2 × 2/4 - ¾ × 2 - 4 × 4

= 3 - 4/4 - 6/4 - 16

= 3-1-3/2-16

= 6-2-4-32/2

= 4-4-32/2

= 0-32/2

= -32/2

= -16