Answer:
c
Step-by-step explanation:
Answer:
Technically it is supposed to be 37.7 but in this case, the answer is C: 37.68 cm
Step-by-step explanation:
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Answer:
Step-by-step explanation:
2) ∠A + ∠B = 146 {Exterior angle theorem}
5y + 3 + 4y + 8 = 146
5y + 4y + 3 + 8 = 146 {combine like terms}
9y + 11 = 146
9y = 146 -11
9y = 135
y = 135/9
y = 15
3) m∠A = 5y + 3
= 5*15 + 3
= 75 + 3
∠A = 78
4) m∠B = 4y + 8
= 4*15 + 8
= 60 + 8
m∠B = 68
5) m∠ACB + m∠A + m∠B = 180 {Angle sum property of triangle}
m∠ACB + 78 + 68 = 180
m∠ACB + 146 = 180
m∠ACB = 180 - 146
m∠ACB = 34
Answer:
wherever the variable (x) is, replace the variable with whatever value it has and solve the equation.
Step-by-step explanation:
Answer: The correct option is (B) negative square root 21 over 5.
Step-by-step explanation: Given that for an angle ,
We are to find the value of
We know that
Cosine is negative in Quadrant II and Quadrant III.
Tangent is positive in Quadrant 1 and Quadrant III.
So, the given angle lies in the Quadrant III.
We will be using the following trigonometric identity:
We have
Since the angle lies in Quadrant III and sine is negative in that quadrant, so
Thus, option (B) is correct.
Answer:
Option B is the correct option.
Step-by-step explanation:
It is given in the question and
We have to calculate the value of
We can see in the figure attached since cos∅ = -2/5
Here negative sign is showing that angle theta is lying either in quadrant 2nd or 3rd.
And is showing as angle is either in quadrant 1 or 3rd.
Therefore it is confirm that angle is lying in quadrant 3 where sine is always negative.
Therefore will be the answer.