45
35
-45
-35
Correct answer is C
tanθ = frac34 → tanθ = 0.75
θ = tan−1[0.75] → 36.8698°
cosθ = cos[36.8698°]
→ 0.800 or frac45
However; in the third quadrant Cosine is negative
i.e -frac45
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