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The simplified value of (sec x sec y + tan x tan y)2 - (sec x tan y + tan x sec y)2
What is the value of \(\frac{{cosec\;\left( {78^\circ - \theta } \right) - \sec \left( {12^\circ \; + \;\theta } \right) - \tan \left( {67^\circ \; + \;\theta } \right)\; + \;\cot \left( {23^\circ - \theta } \right)}}{{\tan 13^\circ \tan 37^\circ \tan 45^\circ \tan 53^\circ \tan 77^\circ }}?\)
A + B + C =  π2 হলে tan A tan B + tan B tan C + tan C  tan A =   কত ? 
Tan x + tan 2x + tan 3x = tan x tan 2x tan 3x সমীকরণে x এর মান হবে-
tan x + tan 2x + tan 3x = tan x tan 2x tan 3x সমীকরণে x এর মান কত ?
If tan 46° tan 29° tan2 A tan 61° tan 44° = tan A, then what is the measure of ‘B’ if tan (A + B) = (√3 + 1)/(√3 - 1)?
$$\frac{{2{\text{sin }}{{68}^ \circ }}}{{{\text{cos 2}}{{\text{2}}^ \circ }}}$$   $$ - $$ $$\frac{{2{\text{cot 1}}{5^ \circ }}}{{5\tan {{75}^ \circ }}}$$   $$ - $$ $$\frac{{3\tan {{45}^ \circ }.\tan {{20}^ \circ }.\tan {{40}^ \circ }.\tan {{50}^ \circ }.\tan {{70}^ \circ }}}{5}$$         is equal to?
y22-x2 = 1 একটি অধিবৃত্তের সমীকরণ –(i) অধিবৃত্তের শীর্ষবিন্দু 0,±2(ii) উপকেন্দ্র 0,±3(iii) দিকাক্ষদ্বয়ের সমীকরণ x = ±223নিচের কোনটি সঠিক?
Six bells make a sound of tick together in the beginning and after every 5 sec, 10 sec, 15 sec, 20 sec, 18 sec, and 21 sec respectively. How many times will the bells ring together in 1.5 hours?
In a 200 meters race, Rohan can give Rahul a 20 meters start and in a 36 km race Rahul can give Sanjay a 4 km start. If the speed of Rahul is 36 m/sec then what is the speed of Rohan in m/sec? A. 20 m/sec B. 40 m/sec C. 24 m/sec D. 50 m/sec