(3/5)(5) - 4
3 - 4
This equation is equivalent to -1 when x is equal to 5.
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I'd suggest you write:
":<span>What is cos theta IF tan theta= 8/5?
tan theta = opp / adj = 8 / 5, so we know that opp = 8 and adj = 5. Then the length of the hypotenuse is sqrt(8^2+5^2) = 9.43.
Thus, the cosine of theta / cosine of this angle is
adj 5
----- = ---------- , or about 0.53.
hyp 9.43</span>
Answer:
The answer is D.
Step-by-step explanation:
9514 1404 393
Answer:
C. 837
Step-by-step explanation:
The remaining angle is ...
C = 180° -A -B = 180°-62° -67° = 51°
The law of sines tells us that the length AC is ...
AC/sin(B) = AB/sin(C)
AC = AB·sin(B)/sin(C) = 40·sin(67°)/sin(51°)
Using the area formula given, we now have ...
area = 1/2(AB)(AC)sin(A)
= (1/2)(40)(40·sin(67°)sin(62°)/sin(51°) ≈ 836.7
The area of the triangle is about 837 square units.
Answer:
1.33
Step-by-step explanation: