6ab + a(a – b – 6b) + 4a(2b +a) – ab , para a= -1 e b=2 ME AJUDEM! É URGENTE
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We have two sides and one angle opposite to one of the known sides.
Begin with applying the Law of Sines to find angle A:
= <span>
Then, solve for sin A:
</span>sin A =
Now, plug in numbers:
sin A = 19 × sin(38) / 10 = 1.17
We know that it does not exist an angle whose sin is bigger than 1, therefore
no triangle is formed.
Begin with applying the Law of Sines to find angle A:
Then, solve for sin A:
</span>sin A =
Now, plug in numbers:
sin A = 19 × sin(38) / 10 = 1.17
We know that it does not exist an angle whose sin is bigger than 1, therefore
no triangle is formed.
Angles at right-angle add up to 90 degrees
The measure of acute angle Tryon Street forms with Barton Road is <em>33 degrees</em>
The angle is given as:
---- <em>Angle formed by Tryon Street with Olive Tree Lane. </em>
The measure of the acute angle formed by Tryon Street with Barton Road (B) is calculated using:
---- angle at right-angle
Make B the subject
Substitute 57 for A
Hence, the measure of acute angle is 33 degrees
Read more about acute angles at: