7.
1 answer:
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Answer:
- 3/4
Step-by-step explanation:
<u>Given </u>
- cosθ = 4/5
- 0° ≤ θ < 90°
<u>In the first quadrant both sine and cosine are positive, so as tangent.</u>
- tanθ = sinθ / cosθ =
θ / cosθ =
/ 4/5 =
/ 4/5 =
- 3/5*5/4 =
- 3/4
Answer:
x =
Step-by-step explanation:
x^2 + 8^2 = 9
Simplify the 8^2
x^2 + 64 = 9
Subtract 64 from both sides
x^2 = -55
Take the square root from both sides
x = +/-
Simplify
x =
Hope this helps!