Help with right angle triangle

**robjamell** · 04-28-2011, 05:08 PM

Hello - I am looking for someone to help me with what seems like should be a very easy formula.

I know the ADJACENT in inches and I know one angle in degrees plus the 90degrees. I would like to know the HYPOTENUSE in inches

What is the excel formula.

Thanks
Rob

**MarvinP** · 04-28-2011, 06:15 PM

Hi Rob and welcome to the Excel Help Forum.

Read http://zonalandeducation.com/mmts/tr...tTriangle.html

You will want to study the Cosine formula.
Also you need to know that Excel works in Radians and not degrees.

Give me a real problem with numbers and I'll do an example.

**martindwilson** · 04-28-2011, 06:51 PM

a1/COS(RADIANS(b1)) where a1 is length of adjacent and b1 is angle in degrees

**robjamell** · 04-28-2011, 11:05 PM

Originally Posted by martindwilson

a1/COS(RADIANS(b1)) where a1 is length of adjacent and b1 is angle in degrees

Martindwilson - thanks for the quick and accurate answer

**pike** · 04-28-2011, 11:58 PM

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