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If A, B, and C are the angels of a △ABC then the following is equal to :sin\(({B+C \over2})\)
One dozen notebooks quoted at Rs. 125 are available at 20% discount. How many notebooks can be bought for Rs. 75?
Find the value of \(cot30°+cot75°+cot45°-sin90°+sin45° \over sin60°+cos30°+ tan15°+cos45°\)
A coconut merchant finds that the cost price of 2750 coconuts is the same as the selling price of 2500 coconuts. His loss or gain percent is
If tan A = 1/2 and tan B = 1/3, then the value of A + B is