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borishaifa [10]
2 years ago
14

Use what you know about sine, cosine, and tangent to solve for the missing angle.

Mathematics
2 answers:
Sladkaya [172]2 years ago
6 0
Answer: the angle is approximately 32.5*

Step by step explanation: to find the missing angle you need to use inverse trigonometry. cos-1=(adjacent/hypotenuse). The hypotenuse is the side across an angle of 90* and the adjacent side is the side next to the missing angle.
Wittaler [7]2 years ago
4 0

Answer:

it is a 30 degree angle

Step-by-step explanation:

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Given: x³ + 2x² - 5ax - 7      and  x³ + ax² - 12x + 6

Also, R1 + R2 = 6

in order to find the value of a:

Let p(x) = x³ + 2x² - 5ax - 7 and q(x) = x³ + ax² - 12x + 6

Using remainder theorem i.e if a polynomial p(x) is divisible by polynomial of form x - a then remainder is given by p(a).

Then,

R1 = p( -1 ) = (-1)³ + 2(-1)² - 5a(-1) - 7 = -1 + 2 + 5a - 7 = 5a - 6

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Now,

R1 + R2 = 6

5a - 6 + 4a - 10 = 6

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Therefore, Value of a is 2.44

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