Help please! 100 points! question is in photo
2 answers:
Answer:
C)
Step-by-step explanation:
This question requires trigonometry. Trigonometry is used to work out lengths or angles when you are already given some. In this question we are given which formula to use but I will tell how to figure it out if the question doesn't give it to you. The formula's are
Sin⁻¹ = Opposite ÷ Hypotenuse
Tan⁻¹ = Opposite ÷ Adjacent
Cos⁻¹ = Adjacent ÷ Hypotenuse
First of all we have to label the sides,
→ The hypotenuse is the angle opposite the right angle so it is 13
→ The opposite is the side opposite the angle so it is 5
→ The adjacent is the remaining side so it is 12
In the question it has given us the formula to use so we use it,
→ Sin⁻¹ = Opposite ÷ Hypotenuse
⇒ Substitute in the values
→ Sin⁻¹ = 5 ÷ 13
The value of sinM is
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Answer:
2 meters
Step-by-step explanation:
We need to use trigonometry for this. The appropriate one would be tangent, which is (opposite side) divided by (adjacent side).
In this case, the opposite side of angle A is BC, which is 6 meters. The adjacent side of angle A is AB, which is the ground. Since we don't know its length, we call it x.
Now, we write:
= 6/x
To solve, we just multiply both sides by tan(x) and x:
x = 6/[tan(72)] ≈ 1.95 meters ≈ 2 meters.
Thus, the answer is 2 meters.
Hope this helps!