Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

ಒಂದು ವೇಳೆ sin m + sin n = p, cos m + cos n = q ಆಗಿದ್ದರೆ, sin m × sin n + cos m × cos n ಮೌಲ್ಯವನ್ನು ಕಂಡುಹಿಡಿಯಿರಿ?

1

p²+ q² - 2

2

(p² + q² - 2)/2

3

p + q - pq

4

p + q + pq

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