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nekit [7.7K]
2 years ago
6

Find the length of the third angle of a triangle given that the first two angles are 35 and 70.

Mathematics
1 answer:
ss7ja [257]2 years ago
7 0
Hi,

the interior angles of a triangle always add up to 180 degrees. Therefore 35 + 70 + ? = 180.
so, 35+70 = 105. 180-105= 75 degrees.
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\frac{dA}{dt} = \frac{1}{2}[\sqrt{100 - B^{2}}*\frac{dB}{dt} - \frac{B^{2}}{(\sqrt{100 - B^{2}})}*\frac{dB}{dt}]  

\frac{dA}{dt} = \frac{1}{2}[\sqrt{100 - 6^{2}}*9 - \frac{6^{2}}{\sqrt{100 - 6^{2}}}*9]      

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Therefore, the area is changing at 15.75 square feet per second.

I hope it helps you!                                    

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