Explanation

• “Hit the sack” is a common English idiom.
• It means to go to bed or go to sleep.
• It is used in informal daily conversation.
• The phrase became popular in the early 20th century.

Last verified on 24-05-2026

Explanation

• The idiom "to bite the bullet" means "to face a difficult or unpleasant situation with courage."
• It refers to enduring a tough situation bravely rather than avoiding it.

Last verified on 24-05-2026

Explanation

• "And" is a conjunction that connects words, phrases, or clauses.
• In the sentence, "and" connects two activities: "read books" and "watch movies."

Last verified on 06-05-2026

Explanation

• An adjective describes a noun or pronoun.
• It gives information about quality, size, color, or condition.
• In this sentence, it describes the noun “watch.”
• “Expensive” shows the quality of the watch.

Last verified on 24-05-2026

Explanation

• An adverb describes a verb, adjective, or another adverb.
• In this sentence, it tells how often they visit.
• “Rarely” shows frequency (not often).
• It modifies the verb “visit.”

Last verified on 24-05-2026

Explanation

a/b = 10/11 and b/c = 6/7  

Multiply them to get a/c:

a/c = (a/b) × (b/c) = (10/11) × (6/7) = 60/77

So a:c = 60:77

Last verified on 24-05-2026

Explanation

Mean = (Sum of numbers) / (Number of values)  

Mean = (12 + 14 + 16 + 18) / 4  

Mean = 60 / 4 = 15

Last verified on 24-05-2026

Explanation

• A diameter is the longest chord of a circle.
• Angle subtended by a diameter at the circumference is always 180°.
• This forms a straight line at the circle’s edge.
• It is based on circle geometry principles.

Last verified on 24-05-2026

Explanation

secθ = 1/cosθ, so  

secθ × cosθ = (1/cosθ) × cosθ = 1

Last verified on 24-05-2026

Explanation

We use sin²θ + cos²θ = 1  

cos²θ = 1 - sin²θ  

cos²θ = 1 - (7/25)²  

cos²θ = 1 - 49/625  

cos²θ = 576/625  

cosθ = ±√(576/625) = ±24/25

Sign depends on the quadrant of θ

Last verified on 24-05-2026