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3sinθ + 9.758 = 13cosθ
You cannot solve right now.
sinθ and cosθ are essentially 2 variables
You could use the casioFx991 solver to solve though
(3sinθ + 9.758) = (13cosθ)
- Square both sides
2
nsinθ + a = mcosθ
Example:
2
9sin θ + 58.548sinθ + 95.2186= 169cos θ
2
2
9sin θ + 58.548sinθ + 95.2186= 169(1 - sin θ)
2
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9sin θ + 58.548sinθ + 95.2186= 169 - 169sin θ
2
2
178sin θ + 58.548sinθ - 73.7814 = 0
2
Quadratic formula
Squaring loses some solutions, but we will bring them back
θ = 30, -47.5
This is extraneous
θ = 30