Q. In ΔSTU,t=77 inches, s=22 inches and ∠S=161∘. Find all possible values of ∠T, to the nearest degree.Answer:
Apply Law of Sines: To find the possible values of angle T, we can use the Law of Sines, which relates the sides of a triangle to the sines of its opposite angles. The Law of Sines states that for any triangle ABC with sides a, b, and c opposite angles A, B, and C respectively, the following ratio holds true: asinA=bsinB=csinC. We will apply this to triangle STU.
Find sine of angle S: First, we need to find the sine of angle S. Since angle S is given as 161 degrees, we can calculate its sine using a calculator.sin(161∘)≈0.46947156
Set up ratio for sides: Now, we can set up the ratio using the Law of Sines for sides s and t and their opposite angles S and T respectively.ssinS=tsinTSubstituting the known values, we get:22sin161°=77sinT
Solve for sinT: Next, we solve for sinT by cross-multiplying.sinT=(sin161°)⋅(2277)sinT≈0.46947156⋅(2277)sinT≈1.651
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