There are 48 students in the 6th-grade band. If this represents 30% of the students in 6th grade, how many students are in the 6
2 answers:
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The composite figure in the attached file
we know that
[the volume of the composite figure]=2*3*30+2*20*2-------> (180+80) units³
[the volume of the composite figure]=2*3*30+2*20*2-------> 260 units³
260 units³ < 300 units³
and
260 units³ > 250 units³
we know that
[the volume of the composite figure]=2*3*30+2*20*2-------> (180+80) units³
[the volume of the composite figure]=2*3*30+2*20*2-------> 260 units³
260 units³ < 300 units³
and
260 units³ > 250 units³
Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identities
• tanx =
• sin²x + cos²x = 1 ⇒ sin²x = 1 - cos²x
Consider the left side
= -
= 1 - cos²x
= sin²x = right side ⇒ verified