Cot^2x - cot^2x cos^2x
= cot^2x - {(cot^2x)(cos^2x)}
= cot^2x { 1 - cos^2x }
= cot^2x { sin^2x }
= (cos^2x/sin^2x) { sin^2x }
= cos^2x
Step-by-step explanation:
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Step-by-step explanation:
We can use the pascal triangle to find the coefficients of the expasion of the cube. It holds that

Answer:
19 people passed
Step-by-step explanation:
19 people passed the test
Answer:
1
Step-by-step explanation:
1/4+3/4 this makes a plus because a -&- makes +
1+3/4
4/4
1