Trigonometry KUS objectives BAT rearrange and solve trig

Trigonometry • KUS objectives BAT rearrange and solve trig equations BAT Starter: sketch these graphs Check using Desmos / geogebra

WB 29 Divide by Cosθ Use Trig Identities Use Tan-1 2 90 63. 4 180 270 243. 4 360 y = Tanθ

WB 30 solve Quadratic Equations given to you using Sin, Cos or Tan Work out the acceptable range. Subtract 30 Square root both sides. On fractions root top and bottom separately. Can be positive or negative. 1/ 45 135 √ 2 -1/√ 2 90 180 225 270 360 y = Sinθ 315 360 added to get a value in the range

WB 31 solve Quadratic Equations given to you using Sin, Cos or Tan Factorise Work out what value would make either bracket 0 1 -0. 5 0 360 90 120 180 270 240 360 Cosθ = 1 has 2 solutions y = Cosθ = -0. 5 has 2 solutions

WB 32 solve Quadratic Equations given to you using Sin, Cos or Tan Factorise Work out what value would make either bracket 0 2 1 Sinθ = 2 has no solutions 90 90 Sinθ = 1 has 1 solution 180 270 360 y = Sinθ

WB 33 solve Quadratic Equations given to you using Sin, Cos or Tan Factorise Work out what value would make 0

WB 34 exam Q

Practice 3 Solve these equations

KUS objectives BAT rearrange and solve trig equations self-assess One thing learned is – One thing to improve is –

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