Math- class 10-Trigonometry2

If x tan 45° sin 30° = cos 30° tan 30°, then x is equal to

• √3

• 1/2

• 1√2
  

• 1

If sin θ + sin² θ = 1, then cos² θ + cos⁴ θ = .

• -1

• 0

• 1

• 2

sin 2B = 2 sin B is true when B is equal to

• 90°

• 60°

• 30°

• 0

(Sin 30°+cos 60°)-(sin 60° + cos 30°) is equal to:

• 0

• 1+2√3

• 1-√3

• 1+√3

(sin A−2 sin³A)/ (2 cos³A−cos A)=

• tan A

• CotA

• SecA

• 1

If secθ + tanθ = x, then tanθ is:

• (x²-1) / 2x

• (x²+1) / 2x

• (x²-1) / x

• (x²+1) / x

If 5tanθ=4, then value of (5sinθ -4cosθ)/(5sinθ +4cosθ) is:

• 1/6

• 5/6

• 0

• 5/3

In △PQR, PQ = 12 cm and PR = 13 cm. ∠Q=90° Find tan P – cot R

• –(119/60)

• (119/60)

• 0

• 1

If sinθ=cosθ, then what is the value of tanθ?

• 1

• 0

• undefined

• 0

• 1