Pls solve the above questions...
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Answer:
Step-by-step explanation:
A + B + C =180(ANGLE SUM PROPERTY)
B+C=180-A
DIVIDING BOTH THE SIDES BY 2
B+C/2=180-A/2
B+C/2=90-A/2
SIN(B+C/2)=SIN(90-A/2) (SIN(90- THETA )=COS THETA)
SIN(B+C/2)=COS(A/2)
ANLGE A = 90
A+B+C=180
90+B+C=180
B+C=180-90
B+C=90
TAN(B+C/2) = 90/2 = 45
sonabrainly:
is it from board exam
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