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Nonamiya [84]
3 years ago
11

What is the third angle in a triangle with two angles of 60* and 45*

Mathematics
1 answer:
REY [17]3 years ago
6 0

The answer is 75° because all three angles of a triangle must add to 180°

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Rewrite sin^2 2xcos ^2 2x as an expression in terms of the first power of cosine
zavuch27 [327]

Answer:

Step-by-step explanation:

use the formula { a couple of times} cos 2 Θ = 2 cos ² Θ - 1 = 1 - 2 sin ² Θ....your answer will likely have a cos  2x , a cos 4x , and a cos 6x in it.....note : cos ² Θ - sin ²Φ = cos ( Θ + Φ) cos (Θ - Φ) will also be needed for appropriate choices of Θ & Φ in terms of x

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2 years ago
A rectangle is 2/5 in. long and 1/3 in. wide.<br><br><br><br> What is the area of the rectangle?
Aloiza [94]
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please mark as brainliest
7 0
3 years ago
Read 2 more answers
Which one is it? need help please
klio [65]
When x = - 4 then
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answer is 
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3 years ago
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nordsb [41]

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6 0
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