Math, asked by nancy1704, 1 year ago

Pls solve the above questions... ​

Attachments:

Answers

Answered by sonabrainly
1

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
Similar questions