D4(RAH) QUIZ OF THE DAY

What is the reciprocal of sinθ?

• cosecθ
• cotθ
• sec²θ
• secθ

Answer explanation

The reciprocal of sinθ is cosecθ.

What is the reciprocal of cosθ?

• cotθ
• secθ
• tanθ
• cosecθ

Answer explanation

The reciprocal of cosθ is secθ.

What is the reciprocal of tanθ?

• secθ
• secθ
• cotθ
• cosecθ

Answer explanation

The reciprocal of tanθ is cotθ.

What is the value of sin²θ + cos²θ?

• 0.5
• 0
• 2
• 1

Answer explanation

According to trigonometric identity, sin²θ + cos²θ = 1.

What is the value of cosec²θ - cot²θ?

• 2
• 0
• 0.5
• 1

Answer explanation

According to trigonometric identity, cosec²θ - cot²θ = 1.

What is the value of sec²θ - tan²θ?

• 0.5
• 0
• 2
• 1

Answer explanation

According to trigonometric identity, sec²θ - tan²θ = 1.

What is sin(90° + θ) equal to?

• -sinθ
• -cosθ
• cosθ
• sinθ

Answer explanation

sin(90° + θ) = cosθ as per trigonometric angle transformation.

What is cos(90° + θ) equal to?

• -cosθ
• sinθ
• -sinθ
• cosθ

Answer explanation

cos(90° + θ) = -sinθ as per trigonometric angle transformation.

What is sin(180° + θ) equal to?

• sinθ
• -cosθ
• -sinθ
• cosθ

Answer explanation

sin(180° + θ) = -sinθ as per trigonometric angle transformation.

What is the value of cos π?

• 0
• 1
• -1
• 0.5

Answer explanation

cos π = -1 is a standard trigonometric value.