Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

If ( \theta=112^\circ30' ), what is its supplementary angle?

Answer and explanation

Correct answer: (67^\circ30')

The direct answer is 67°30′, so option A is correct. A supplementary angle is the angle that makes a straight angle of 180°. Therefore subtract the given angle from 180°: 180°00′−112°30′. Since 0 minutes cannot subtract 30 minutes, borrow 1 degree, which is 60 minutes. Then 179°60′−112°30′=67°30′. Option A, 67°30′, works exactly. Option B, 77°30′, would leave a total of 190°, not 180°. Option C, 57°30′, gives 170° when added to the given angle. Option D, 68°30′, gives 181°, so it is one degree too large. The word supplementary means a total of 180°, while complementary means a total of 90°; confusing these words is a common error. Memory cue: for a supplementary angle, use 180°−θ, and borrow 60 minutes when the minutes of the first angle are zero.

Related tags

Trigonometric-FunctionsAnglesSupplementary-Dms

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.