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if theta=sin^-1(x)+cos^-1(x)-tan^-1(x) and x>0 or x=0 then
optins-1)45<theta<90
2)0<theta<180
The bearing of bird on a tree from a hunter on the ground is N720E. What is the bearing of the hunter from the bird?
find the value of common radius which is 4 of the ball bearings
When you're solving a trig equation and it asks you to solve each equation for all values of x, do you have to give the answer in "for any integer n" form?
There is a tower the angle of elevation from the point 'A' which is situated South of the tower is 30°. And angle of elevation of the tower from point 'B' which is to the West of point 'A' is 18°.
If AB = a
Find the height of tower using 'a'.
(sin 18°= (√5-1)/4 )
Express the complex number in trigonometric form.

-3 + 3 square root of threei
IN ANY TRIANGLE ABC, IF SIN^2A = SIN^2B + SIN^2C ; PROVE THAT THE TRIANGLE IS RIGHT ANGLED AT A
Find the value of:-
sin4A-cos4A=sin2A-cos2A
if tana=b/a, prove that acos2a+bsin2a=a
A building 8 feet high is 27/8 feet from a building. Find the length of the shortest ladder which will clear the wall and rest with one end on the ground and the other end on the building. Also, find the angle which this ladder makes with the horizontal?
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