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Trigonometry
prove that
sinB/sinA=sin(2A+B)/sinA-2cos(A+B)
sinB/sinA=sin(2A+B)/sinA-2cos(A+B)
Trigonometry
If tan (x)+cot(x)=2 then tan 2(x)+cot 2 (x)=?
Trigonometry
find the angel of least positive measure that is co-terminal with negative 223 degrees.
Trigonometry
A vector w of magnitude 50 points southeast. Resolve the vector into southerly and easterly components.
a) The southerly component has a magnitude of ___.
b)What is the length?
a) The southerly component has a magnitude of ___.
b)What is the length?
Trigonometry
Andrea and Carlos left the airport at the same time. Andrea flew at 190 mph on a course with bearing of 80°, and Carlos flew at 240 mph on a course with a bearing of 210°.
How far apart were they after 4 hours?
__mi
(Round to the nearest tenth)
How far apart were they after 4 hours?
__mi
(Round to the nearest tenth)
Trigonometry
A ranger in tower A spots a fire at a direction of 302°. A ranger in tower B, located 40 mi at a direction of 41° from tower A, spots the fire at a direction of 291°. How far from tower A is the fire? How far from tower B?
The fire is __mi from tower A, and __ mi from tower B.
(round to the nearest whole number)
The fire is __mi from tower A, and __ mi from tower B.
(round to the nearest whole number)
Trigonometry
tan(55+x)=cos(55-x)
Trigonometry
prove that: tan(55+x)=cos(55-x)
Trigonometry
Solve, finding all solutions in [0,2π)
-cos(π-x)-sin(x-π/2)=-1
-cos(π-x)-sin(x-π/2)=-1
Trigonometry
How do you find
cotx=√3
1/cosx=-1/4
Answer in radians
cotx=√3
1/cosx=-1/4
Answer in radians
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#339914 on Dec 2023
#339914 on Dec 2023