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AlexFokin [52]
3 years ago
15

If cot θ= tan (pi/6) what is cos θ? Round your answer to the nearest hundredth.

Mathematics
1 answer:
lutik1710 [3]3 years ago
7 0

Answer:3.46

Step-by-step explanation:

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.prove that cos (90-A).sinA + sin(90 - A).cosA = 1 ​
pav-90 [236]

Answer:

See Explanation

Step-by-step explanation:

cos (90-A).sinA + sin(90 - A).cosA = 1  \\  \\ LHS = cos (90-A).sinA + sin(90 - A).cosA \\  \\ = sinA.sinA + cosA.cosA\\  \\ = sin ^{2} A + cos^{2} A \\  \\  = 1 \\  \\=RHS\\\\ reason \\ cos (90- \theta) = sin \theta \\ sin (90- \theta) = cos \theta \\ sin ^{2}  \theta + cos^{2}  \theta = 1 \\  \\ thus \: proved \\

4 0
3 years ago
"need help!!"
castortr0y [4]

Answer:

B) >

Step-by-step explanation:

61.30 is greater than 61.28 by 0.2. and the second sign, (>), compares that 61.30 is greater than

8 0
3 years ago
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Could I plz plz have help with factorising this quadratics(not using quadratic formula)
spin [16.1K]

(x-3)^2=(3x+10)*(x-3) so to solve this u can simply take (x-3) over to the other side so it will; look like this

(x-3)^2/(x-3)=3x+10

then it will be x-3=3x+10

-2x=13

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7 0
4 years ago
75 points if answered corectly and brainlyist
olga nikolaevna [1]

Answer:

99.96 square feet

Step-by-step explanation:

The formula for the area of a rhombus is (pq)/2, where p and q represent the two diagonals:

A=pq/2

=(16.8)(11.9)/2

=199.92/2

=99.96 square feet

8 0
3 years ago
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Judy baked a pizza for lunch.The size of the pizza was 14 inches in the diameter. Find the area of the pizza.​
TEA [102]
A = πr². So, 14 / 2 = 7 inches (radius). A = (3.14)(7)² || A = (3.14)(49) || A = 153.86 Inches ². Hope this helps!
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3 years ago
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