Question 12
TrigonometryIf 9 cos x − 7 = 2 and 0° ≤ x ≤ 90°, find x
- A.0°
- B.90°
- C.30°
- D.45°
Show the answer and explanation
Answer: A (0°)
Explanation
9 cos x = 9, so cos x = 1, which gives x = 0°.
If 9 cos x − 7 = 2 and 0° ≤ x ≤ 90°, find x
Answer: A (0°)
9 cos x = 9, so cos x = 1, which gives x = 0°.