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Trigonometry
If Sin A = 6/10 and Tan B = 5/12 where A and B are acute angles, find Sin (A+B), and cos 2B without using a calculator. All calculations must be carried out as fractions.
Trigonometry
A person 55-ft tall casts a shadow 1111-ftft long. At the same time, a nearby tree casts a shadow 3131-ft long. Find the height of the tree.
Trigonometry
Determine the Fourier transform of the function :
{ 1-t 0≤t≤1
f(t)= { 1+t -1≤t≤0
{ 0 otherwise
{ 1-t 0≤t≤1
f(t)= { 1+t -1≤t≤0
{ 0 otherwise
Trigonometry
If f(x)=cosx and x=2pie\15
Prove that 16f(x)f(2x)f(4x)f(7x)=1
Prove that 16f(x)f(2x)f(4x)f(7x)=1
Trigonometry
1.Express cos4tita in terms of powere of
cos tita
2.G iven that sin tita=-3/5 and cos alpha=-2/5. Find sin(A+B) if 1. tita and alpha are acute 2. tita is acute and alpha is obtuse
cos tita
2.G iven that sin tita=-3/5 and cos alpha=-2/5. Find sin(A+B) if 1. tita and alpha are acute 2. tita is acute and alpha is obtuse
Trigonometry
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Trigonometry
A right triangle has a hypotenuse of length 7 mm and one leg of length 3 mm.
How long is the other leg?
a) 12.6 mm
b) 2 mm
c) 4 mm
d) 6.3 mm
How long is the other leg?
a) 12.6 mm
b) 2 mm
c) 4 mm
d) 6.3 mm
Trigonometry
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