 Solving a Triangle Example 6: Solve To 'solve' means to find all the missing sides or angles. 
We need to find side x and angles θ and φ Let's use the Pythagorean Theorem to find x: x2 + 402 = 502 x2 = 502 - 402 x2 = 900 x = 30 We're going to use this angle to make a trig fraction: We're finding θ so o = 40 and h = 50 40/50 = sinθ 0.8 = sinθ θ = sin-1(0.8) = 53° This makes φ = 180 - (53 + 90) = 37° Next you might want to check out some sample trig problems |