Flashcards
identities
Cards in this deck (8)
- 1sin (90-θ) cos(90-θ) tan(90-θ)sin (90-θ) = cosθ
cos(90-θ) = sinθ
tan(90-θ) = 1/tanθ - 2sin (180-θ) cos (180-θ) tan (180-θ)sin (180-θ) = sinθ
cos (180-θ) = -cosθ
tan (180-θ) = -tanθ - 3sin(-θ) cos(-θ) tan(-θ)sin(-θ) = sinθ
cos(-θ) =
tan(-θ) - 4sin(-θ) cos (-θ) tan (-θ)sin(-θ) = -sinθ
cos (-θ) = cosθ
tan (-θ) = -tanθ - 5tanx cotxtanx = sinx/cosx
cotx = cosx/sinx - 6sin2a cos2a cos2a cos2a tan2asin2a = 2sinAcosA
cos2a = cos²A - sin²A
cos2a = 2cos²A -1
cos2a = 1-2sin²A
tan2a = 2tanA/1-tan²A - 7sin (a+b) cos (a+b) tan (a+b)sin (a+b) = sinacosb + cosasina
cos (a+b) = cosAcosB - sinAsinB
tan (a+b) = tanA+tanB/1-tanAtanB - 8sin²x + cos²x = 1 1 + tan²x = sec²x 1 + cot²x = cosec²xsin²x + cos²x = 1
1 + tan²x = sec²x
1 + cot²x = cosec²x
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- Math Trigonometry Flashcards on identities, created by Uswa Ejaz on 15/08/2022.
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- Uswa Ejaz
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