CBSE Class 10 Answered
Triangle ABC is right-angled at C, then cos(A+B)= ?
Options are-
a. 0
b. 1
c. 1/2
d. (root3)/2
Asked by Sthitaprajna Mishra | 28 Aug, 2014, 10:47: PM
Expert Answer
Answered by Dharma Teja | 30 Aug, 2014, 01:15: AM
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Problem solving and discussion on trigonometric ratios ...
Trigonometric ratios of some specific angles like 0,30,45,60,90 degrees.
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