If $\sin^2 A = 1 + \cos^2 A$ , then $A = ?$

The condition gives $\sin^2A-\cos^2A=1$ ; combined with $\sin^2A+\cos^2A=1$ this forces , so .

214/217

এই অধ্যায়ের আরও প্রশ্ন

C-09-Q215In right with , and , then
C-09-Q216With the same triangle and ,
C-09-Q217For acute ,
C-09-Q207Given the same triangle, of the statements (i) , (ii) , (iii) , which are correct?
C-09-Q208In the same triangle,
C-09-Q209In the same triangle,
C-09-Q210With , , ( acute) and , then
C-09-Q211If (with , , acute), then
C-09-Q212
C-09-Q213In right with , and , then

\circ

60^\circ

6 0^{\circ}

d

90^\circ

sin^{2} A + cos^{2} A = 1

\cos^2A=0

A=90^\circ