Define a radian measure.
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cos2θ3−4sin2θ is equal to
Express sin3A+sin3B+sin3C as the product of three trigonometrical ratios where A, B, C are the angles of a triangle. If the given expression be zero, then at least one angle of the triangle is 60o
If A+B+C=180o, then cotAcotBcotCcotA+cotB+cotC is equal to
Write the complementary angle of 31 of 180o.
The value of cosycos(2π−x)−cos(2π−y)cosx+sinycos(2π−x)+cosxsin(2π−y) is zero if :
If tanA−tanB=x,cotB−cotA=y and(sec(A−B)−1)(sec(A−B)+1)= (x+y)cxayb, then find the value of a+b+c.
The value of cos11o−sin11ocos11o+sin11o is
In a ΔABC,cosB.cosC+sinB.sinC.sin2A=1. Then the triangle is