What is the value of (\cos(\pi+\theta))?(\cos(\pi+\theta)) का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (-\cos \theta)(-\cos \theta)
( \pi+\theta) is in the third quadrant and cosine is negative. In exams recall the sign table quickly.(\pi+\theta) तृतीय चतुर्थांश में है और cosine ऋणात्मक होता है। परीक्षा में sign table तुरंत याद करें।
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