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If is a positive acute angle and 5 cosθ + 12 sinθ = 13, then find the value of cosθ?
5Q:
If is a positive acute angle and 5 cosθ + 12 sinθ = 13, then find the value of cosθ?
- 1$${12\over13}$$false
- 2$${5\over13}$$true
- 3$${5\over13}$$false
- 4$${1\over5}$$false
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