Trigonometric Identities

Cosec²θ - cot²θ equals to

• 1

• -1

• 0

• tanθ

1 + tan²θ equals to

• cosec²θ

• sec²θ

• sin²θ

• cos²θ

Sin²θ + cos²θ equals to

• 0

• 0.5

• 1

• 2

Secθcotθ equals to

• sinθ

• 1⁄cosθ

• 1⁄sinθ

• sinθ⁄cosθ

1 + cot²θ equals to

• sec²θ

• sin²θ

• cosec²θ

• cos²θ

If acos θ + bsin θ = 4 and asin θ - bcos θ = 3, then a² + b² is

• a² - b²

• b² - a²

• a² + b²

• a + b

If acos θ + bsin θ = 4 and asin θ - bcos θ = 3, then a² + b² is

• 7

• 12

• 25

• None of the above

If 2 cos(A + B) = 1, and 2 sin(A –B) = 1 then the values of A and B are

• 45^o, 15^o

• 20^o, 10^o

• 30^o, 45^o

• 15^o, 22^o

Tags

CCSS.HSF.TF.C.9

(sin30° + cos30°) – (sin 60° + cos60°)

• -1

• 0

• 1

• 2

Tags

CCSS.HSF.TF.C.9

Value of tan30°/cot60° is:

• 1/√2

• 1/√3

• √3

• 1

Tags

CCSS.HSF.TF.C.8