Which of the following equals cos 80°a) sin 20°b) sin 100°c) sin 10°d) sin 80°​

3 answers
Question:

Which of the following equals cos 80°
a) sin 20°
b) sin 100°
c) sin 10°
d) sin 80°​

Answers

C

Step-by-step explanation:

Using the Cofunction identity

sin(90 - x)° = cos x°, hence

cos80° = sin(90 - 80)° = sin10° → C

answer: yes youre right.

step-by-step explanation:

step-by-step explanation: 4 cause 2+2=4

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