Two sides of a right triangle ABC (C is the right angle) are given. Find the indicated trigonometric function of the given angle.

5) Find cosA when a=7 an b=2

6) Find tanA when a=7 and b=6

thank you :)

Printable View

- June 14th 2008, 01:17 PMtangerine_tomatoi need trig help
Two sides of a right triangle ABC (C is the right angle) are given. Find the indicated trigonometric function of the given angle.

5) Find cosA when a=7 an b=2

6) Find tanA when a=7 and b=6

thank you :) - June 14th 2008, 01:24 PMsean.1986
5)

c = sqrt(53)

CosA = 2/sqrt(53)

6)

tanA = 7/6 - June 14th 2008, 02:09 PMReckoner
- June 14th 2008, 06:29 PMtangerine_tomato
- June 14th 2008, 06:30 PMtangerine_tomato
- June 14th 2008, 06:48 PMReckoner
- June 14th 2008, 07:49 PMsean.1986
The right angle is always opposite the longest side (hypoteneuse).

So in this case, the hypoteneuse would be c, right angle would be C.

The other two angles A and B are oppsite sides a and b respectively. The positioning of these two sides is irrelevant because you're basically just flipping or turning the same triangle.