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What is the value of sin2 6° + sin2 12° + sin2 18° + … + sin2 84° + sin2 90°?
যদি A+B+C= π হয় তবে sin2 A2+sin2 B2+sin2 C2 সমান−
sin2(10∘)+sin2(20∘)+sin2(30∘)+...sin290∘= কত ? 
sin2(10∘)+sin2(20∘)+sin2(30∘)+. . . . . +sin2200= ?  
What should come in place of question mark (?) in the following question? 2.3̅9̅ + 5 + 6.2̅5̅ + 0.0̅8̅ = ?
What is the simplified value of [(tan2 θ – sin2 θ)/tan2 θ sin2 θ]?
What is sin2 20° + sin2 70° equal to?
Consider the pseudocode given below. The function DoSomething() takes as argument a pointer to the root of an arbitrary tree represented by the leftMostChild-rightSibling representation. Each node of the tree is of type treeNode. typedef struct treeNode* treeptr; struct treeNode {              treeptr leftMostChild, rightSibling; }; int DoSomething (treeptr tree) {              int value=0;              if (tree != NULL) {              if (tree->leftMostChild == NULL)              value = 1;    else               value = DoSomething(tree->leftMostChild);               value = value + DoSomething(tree->rightSibling);     }               return(value); } When the pointer to the root of a tree is passed as the argument to DoSomething, the value returned by the function corresponds to the 
If 3 sin2 A + 4 cos2 A - 3 = 0, then the value of cot A (where 0 ≤ A ≤ 90°) is:
If sin­­2 θ = (tan2 θ – sin2 θ) where 0° < θ < 90°, then find the value of cosec2 θ + sec2 θ + cot2 θ.