Question

value of 4cot2 45° - sec2 60° + cos2 90°​

Answer 1

Answer:

0

Step-by-step explanation:

$4cot^245 = 4(1)^2 = 4\\sec^260 = 2^2 = 4\\cos^290 = 0^2 = 0$

Therefore,

$4cot^245 - sec^260 + cos^290 = 4 - 4 + 0 = 0$