Emperor Penguin
New member
[a] Find the value of tan (?–?) if cos ? = 3/5, sin ? = 5/13, 0° < ? < 90°, and 0° < ? < 90°.
If cos ? = 0.8 and 0° < ? < 90°, find the exact value of sin 2?.
Having trouble understanding these.
If cos ? = 0.8 and 0° < ? < 90°, find the exact value of sin 2?.
Having trouble understanding these.