10 points!!!!!?!!!! Tyrone wants to know how much wrapping paper is needed to cover a box with the dimensions shown
1 answer:
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Answer:
see explanation
Step-by-step explanation:
Using the double angle identity for sine
sin2x = 2sinxcosx
Consider left side
cos20°cos40°cos80°
= (2sin20°cos20°)cos40°cos80°
= (2sin40°cos40°)cos80°
= (sin80°cos80° )
= (2sin80°cos80° )
= . sin160°
= . sin(180 - 20)°
= . sin20°
= = right side , thus proven
Complete Question
The diagram for this question is shown on the first uploaded image
Answer:
The value of x is
Step-by-step explanation:
From the question we are told that
The length of the vertical length is
The length of the base leg is L = 330 + d units
The length of the bisecting line segment is h
The base angle is
The angle between d and line segment is
For the first angle
=>
For the whole big triangle
=>
So equating the both d
Substitute values
