Question

Omg please help me i can only hang out with my friends tmrw if i do this assignment :( what is the measure of angle b?

Answer 1

Answer:

90°

plz mark as brain liest and kindly give a thanks

Answer 2

Answer:

ᴛʜᴇ ᴍᴇᴀꜱᴜʀᴇ ᴏꜰ ᴀɴɢʟᴇ ʙ ɪꜱ

$\cos( {}^{ - 1} ) (2 \div 5) = 66.421$