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# Other Related Questions on Trigonometry

The minimum value of atan 2 x + cot 2 x equals the maximum value of asin 2 y + bcos 2 y where a and b are grater than 0. Then a/b is (a)2 (b)4 (c)6 (d)8 Please explain fully.

The minimum value is 2√ab but I can not understand how it came?

 Mudit one month ago

Minimum value of atan 2 x + cot 2 x = > First convert them into sec and cosec. = a(sec^2x – 1) + (cosec^2 – 1) = a(1/cos^^2x – 1) + (1/sin^2x – 1) = 1/sin^2x + a/cos^2x – 2 = 1/(1-cos^2x) + ...

 Vikas TU one month ago
If sina+sinb+sinc=3 then find the value of cosa+cosb+cosc

Hii the maximum value for sin is 1 and since you have three sin's adding up to 3, each of the sin's must be 1! So A = B = C = 90 degrees or any angle coterminal with 90 degrees. And ...

 Sourabh Singh 21 days ago
∫(x+sinx)/(1+cosx)dx

∫(x+sinx)/(1+cosx)dx => write sinx and cosx in half angle formulaes: => (x + 2sinx/2cosx/2)/(2cos^2x/2)dx => 0.5xsec^2x/2 dx + tanx/2 dx …..........................(1) let tanx/2 = u...

 Vikas TU 22 days ago

Bhai, HashLearn is providing unlimited doubt clearing with IIT tutors for a month at Rs. 199. You should try them. Better than waiting here for a response

 Ankit 12 days ago
if S is the circumcentre , O is the orthocentre of triangle ABC then SA +SB+SC equals

Dear Student, In which terms you want the answer? Since from here I can see that SA = SB = SC = R (Circumradius )and is the distance between S and any vertex, which can be easily calculated...

 Vijay Mukati 7 months ago
if AB=A and BA=B then which is correct a) A^2=A b) B^2=B c)A=I d) B=I? chapter matrices

Both options (a) and (b) are correct .A 2 =A & B 2 =B.

Look options a) and b) are correct showing that options c and d are also correct.see below for explaination. A 2 =A--------->A.A=A------------->A=A -1 .A(taking one of the A to right side...

Nikhil Upadhyay but why C and D not correct??? if we multiply both side by A inverse.... we will get A=I. ???

 rajnish kumar one year ago
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