Answer: 67.2°
Step-by-step explanation:
To find angle C, we have to use cosine rule. Therefore,
12² = 8² + 10² - 2 × 8 × 10 × cosC
C = 82.8°
The bearing of A from C will be
= 150° - 82.8°
= 67.2°.
Hello, and thank you for posting your question here on brainly.
When you're dividing two fractions, there's a simple rule to follow.
You flip the second fraction, (aka reciprocal) and then multiply.
2/3 ÷ 1/4 = 2/3 * 4/1
You multiply across from the top and bottom.
2/3 * 4/1 = 8/3
8/3 = 2 2/3
Your final answer is C.
Hope this helps! ☺♥
A counterexample for the expression secФ / tanФ = sinФ is 45°
This is a FALSE statement.
Explanation:
Solving Right-hand side:
SecФ = 1 / CosФ
tanФ = SinФ / CosФ
secФ/tanФ = 1 / CosФ ÷ SinФ / CosФ
secФ/tanФ = 1 / CosФ × CosФ/SinФ
secФ/tanФ = CosФ / SinФCosФ
secФ/tanФ = 1 / SinФ
Hence,
Left-hand side ≠ Right-hand side
X=4
Y=-5
i hope that will help
